CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available" lang="en" dir="ltr"> <head> <meta charset="UTF-8"> <title>V8 (JavaScript engine) - Wikipedia</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-sticky-header-enabled vector-toc-available";var cookie=document.cookie.match(/(?:^|; )enwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy", "wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgRequestId":"b3f4d54e-ae37-4dcd-8934-c60e6744a262","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"V8_(JavaScript_engine)","wgTitle":"V8 (JavaScript engine)","wgCurRevisionId":1271945660,"wgRevisionId":1271945660,"wgArticleId":19140716,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles with short description","Short description is different from Wikidata","Use dmy dates from March 2024","Commons category link is on Wikidata","2008 software","Free and open source interpreters","Google Chrome","Google software","JavaScript engines","Software using the BSD license","Virtual machines"],"wgPageViewLanguage":"en","wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgRelevantPageName":"V8_(JavaScript_engine)","wgRelevantArticleId": 19140716,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgFlaggedRevsParams":{"tags":{"status":{"levels":1}}},"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","pageVariantFallbacks":"en"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":false,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":10000,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q574992","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics":true, "wgGETopicsMatchModeEnabled":false,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false};RLSTATE={"ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","jquery.makeCollapsible.styles":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","site","mediawiki.page.ready","jquery.makeCollapsible","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.ReferenceTooltips","ext.gadget.switcher","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups", "ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=en&modules=ext.cite.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikimediaBadges%7Cext.wikimediamessages.styles%7Cjquery.makeCollapsible.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=en&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=en&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.15"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="V8 (JavaScript engine) - Wikipedia"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//en.m.wikipedia.org/wiki/V8_(JavaScript_engine)"> <link rel="alternate" type="application/x-wiki" title="Edit this page" href="/w/index.php?title=V8_(JavaScript_engine)&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipedia (en)"> <link rel="EditURI" type="application/rsd+xml" href="//en.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://en.wikipedia.org/wiki/V8_(JavaScript_engine)"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en"> <link rel="alternate" type="application/atom+xml" title="Wikipedia Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-V8_JavaScript_engine rootpage-V8_JavaScript_engine skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Jump to content</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" title="Main menu" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Main menu" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Main menu</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Main menu</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">hide</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navigation </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Main_Page" title="Visit the main page [z]" accesskey="z"><span>Main page</span></a></li><li id="n-contents" class="mw-list-item"><a href="/wiki/Wikipedia:Contents" title="Guides to browsing Wikipedia"><span>Contents</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Current_events" title="Articles related to current events"><span>Current events</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Special:Random" title="Visit a randomly selected article [x]" accesskey="x"><span>Random article</span></a></li><li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:About" title="Learn about Wikipedia and how it works"><span>About Wikipedia</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us" title="How to contact Wikipedia"><span>Contact us</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Contribute </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-help" class="mw-list-item"><a href="/wiki/Help:Contents" title="Guidance on how to use and edit Wikipedia"><span>Help</span></a></li><li id="n-introduction" class="mw-list-item"><a href="/wiki/Help:Introduction" title="Learn how to edit Wikipedia"><span>Learn to edit</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikipedia:Community_portal" title="The hub for editors"><span>Community portal</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Special:RecentChanges" title="A list of recent changes to Wikipedia [r]" accesskey="r"><span>Recent changes</span></a></li><li id="n-upload" class="mw-list-item"><a href="/wiki/Wikipedia:File_upload_wizard" title="Add images or other media for use on Wikipedia"><span>Upload file</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Main_Page" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="The Free Encyclopedia" src="/static/images/mobile/copyright/wikipedia-tagline-en.svg" width="117" height="13" style="width: 7.3125em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Special:Search" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Search Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia" aria-label="Search Wikipedia" autocapitalize="sentences" title="Search Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Personal tools"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Appearance" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Appearance</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en" class=""><span>Donate</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:CreateAccount&returnto=V8+%28JavaScript+engine%29" title="You are encouraged to create an account and log in; however, it is not mandatory" class=""><span>Create account</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Special:UserLogin&returnto=V8+%28JavaScript+engine%29" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o" class=""><span>Log in</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Log in and more options" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Personal tools" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Personal tools</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="User menu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="https://donate.wikimedia.org/?wmf_source=donate&wmf_medium=sidebar&wmf_campaign=en.wikipedia.org&uselang=en"><span>Donate</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:CreateAccount&returnto=V8+%28JavaScript+engine%29" title="You are encouraged to create an account and log in; however, it is not mandatory"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Create account</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Special:UserLogin&returnto=V8+%28JavaScript+engine%29" title="You're encouraged to log in; however, it's not mandatory. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Log in</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Pages for logged out editors <a href="/wiki/Help:Introduction" aria-label="Learn more about editing"><span>learn more</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Special:MyContributions" title="A list of edits made from this IP address [y]" accesskey="y"><span>Contributions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Special:MyTalk" title="Discussion about edits from this IP address [n]" accesskey="n"><span>Talk</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Site"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contents" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Contents</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-History" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#History"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>History</span> </div> </a> <ul id="toc-History-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Design" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Design"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Design</span> </div> </a> <ul id="toc-Design-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Usage" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Usage"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Usage</span> </div> </a> <ul id="toc-Usage-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">V8 (JavaScript engine)</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 30 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-30" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">30 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%83%D8%B1%D9%88%D9%85_%D9%81%D9%8A_8" title="كروم في 8 – Arabic" lang="ar" hreflang="ar" data-title="كروم في 8" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/V8_(JavaScript_m%C3%BCh%C9%99rriki)" title="V8 (JavaScript mühərriki) – Azerbaijani" lang="az" hreflang="az" data-title="V8 (JavaScript mühərriki)" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AD%E0%A6%BF%E0%A7%AE_(%E0%A6%9C%E0%A6%BE%E0%A6%AD%E0%A6%BE%E0%A6%B8%E0%A7%8D%E0%A6%95%E0%A7%8D%E0%A6%B0%E0%A6%BF%E0%A6%AA%E0%A7%8D%E0%A6%9F_%E0%A6%87%E0%A6%9E%E0%A7%8D%E0%A6%9C%E0%A6%BF%E0%A6%A8)" title="ভি৮ (জাভাস্ক্রিপ্ট ইঞ্জিন) – Bangla" lang="bn" hreflang="bn" data-title="ভি৮ (জাভাস্ক্রিপ্ট ইঞ্জিন)" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/V8" title="V8 – Bulgarian" lang="bg" hreflang="bg" data-title="V8" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/V8_(int%C3%A8rpret_JavaScript)" title="V8 (intèrpret JavaScript) – Catalan" lang="ca" hreflang="ca" data-title="V8 (intèrpret JavaScript)" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/V8_(JavaScript-Implementierung)" title="V8 (JavaScript-Implementierung) – German" lang="de" hreflang="de" data-title="V8 (JavaScript-Implementierung)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/V8_(JavaScript-mootor)" title="V8 (JavaScript-mootor) – Estonian" lang="et" hreflang="et" data-title="V8 (JavaScript-mootor)" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/V8_(int%C3%A9rprete_de_JavaScript)" title="V8 (intérprete de JavaScript) – Spanish" lang="es" hreflang="es" data-title="V8 (intérprete de JavaScript)" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%88%DB%8C%DB%B8_(%D9%85%D9%88%D8%AA%D9%88%D8%B1_%D8%AC%D8%A7%D9%88%D8%A7%D8%A7%D8%B3%DA%A9%D8%B1%DB%8C%D9%BE%D8%AA)" title="وی۸ (موتور جاوااسکریپت) – Persian" lang="fa" hreflang="fa" data-title="وی۸ (موتور جاوااسکریپت)" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/V8_(moteur_JavaScript)" title="V8 (moteur JavaScript) – French" lang="fr" hreflang="fr" data-title="V8 (moteur JavaScript)" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/V8_(%EC%9E%90%EB%B0%94%EC%8A%A4%ED%81%AC%EB%A6%BD%ED%8A%B8_%EC%97%94%EC%A7%84)" title="V8 (자바스크립트 엔진) – Korean" lang="ko" hreflang="ko" data-title="V8 (자바스크립트 엔진)" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/V8_(JavaScript_%D5%B7%D5%A1%D6%80%D5%AA%D5%AB%D5%B9)" title="V8 (JavaScript շարժիչ) – Armenian" lang="hy" hreflang="hy" data-title="V8 (JavaScript շարժիչ)" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/V8_(mesin_JavaScript)" title="V8 (mesin JavaScript) – Indonesian" lang="id" hreflang="id" data-title="V8 (mesin JavaScript)" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/V8_(motore_JavaScript)" title="V8 (motore JavaScript) – Italian" lang="it" hreflang="it" data-title="V8 (motore JavaScript)" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/V8" title="V8 – Hebrew" lang="he" hreflang="he" data-title="V8" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/V8_JavaScript-motor" title="V8 JavaScript-motor – Hungarian" lang="hu" hreflang="hu" data-title="V8 JavaScript-motor" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B5%E0%B4%BF8_(%E0%B4%9C%E0%B4%BE%E0%B4%B5%E0%B4%BE%E0%B4%B8%E0%B5%8D%E0%B4%95%E0%B5%8D%E0%B4%B0%E0%B4%BF%E0%B4%AA%E0%B5%8D%E0%B4%B1%E0%B5%8D%E0%B4%B1%E0%B5%8D_%E0%B4%8E%E0%B4%9E%E0%B5%8D%E0%B4%9A%E0%B4%BF%E0%B5%BB)" title="വി8 (ജാവാസ്ക്രിപ്റ്റ് എഞ്ചിൻ) – Malayalam" lang="ml" hreflang="ml" data-title="വി8 (ജാവാസ്ക്രിപ്റ്റ് എഞ്ചിൻ)" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/V8_(JavaScript%E3%82%A8%E3%83%B3%E3%82%B8%E3%83%B3)" title="V8 (JavaScriptエンジン) – Japanese" lang="ja" hreflang="ja" data-title="V8 (JavaScriptエンジン)" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/V8_(silnik_JavaScript)" title="V8 (silnik JavaScript) – Polish" lang="pl" hreflang="pl" data-title="V8 (silnik JavaScript)" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/V8_(JavaScript)" title="V8 (JavaScript) – Portuguese" lang="pt" hreflang="pt" data-title="V8 (JavaScript)" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/V8_(%D0%B4%D0%B2%D0%B8%D0%B6%D0%BE%D0%BA_JavaScript)" title="V8 (движок JavaScript) – Russian" lang="ru" hreflang="ru" data-title="V8 (движок JavaScript)" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/V8_(JavaScript_%D0%BC%D0%B0%D1%88%D0%B8%D0%BD%D0%B0)" title="V8 (JavaScript машина) – Serbian" lang="sr" hreflang="sr" data-title="V8 (JavaScript машина)" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/V8_(JavaScript-moottori)" title="V8 (JavaScript-moottori) – Finnish" lang="fi" hreflang="fi" data-title="V8 (JavaScript-moottori)" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/V8_(Javascriptmotor)" title="V8 (Javascriptmotor) – Swedish" lang="sv" hreflang="sv" data-title="V8 (Javascriptmotor)" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A7%E0%B8%B58_(%E0%B8%88%E0%B8%B2%E0%B8%A7%E0%B8%B2%E0%B8%AA%E0%B8%84%E0%B8%A3%E0%B8%B4%E0%B8%9B%E0%B8%95%E0%B9%8C%E0%B9%80%E0%B8%AD%E0%B8%99%E0%B8%88%E0%B8%B4%E0%B8%99)" title="วี8 (จาวาสคริปต์เอนจิน) – Thai" lang="th" hreflang="th" data-title="วี8 (จาวาสคริปต์เอนจิน)" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/V8" title="V8 – Turkish" lang="tr" hreflang="tr" data-title="V8" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/V8_(%D1%80%D1%83%D1%88%D1%96%D0%B9_JavaScript)" title="V8 (рушій JavaScript) – Ukrainian" lang="uk" hreflang="uk" data-title="V8 (рушій JavaScript)" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Chrome_V8" title="Chrome V8 – Vietnamese" lang="vi" hreflang="vi" data-title="Chrome V8" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/V8_(JavaScript%E5%BC%95%E6%93%8E)" title="V8 (JavaScript引擎) – Cantonese" lang="yue" hreflang="yue" data-title="V8 (JavaScript引擎)" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target"><span>粵語</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/V8_(JavaScript%E5%BC%95%E6%93%8E)" title="V8 (JavaScript引擎) – Chinese" lang="zh" hreflang="zh" data-title="V8 (JavaScript引擎)" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q574992#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/V8_(JavaScript_engine)" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:V8_(JavaScript_engine)" rel="discussion" title="Discuss improvements to the content page [t]" accesskey="t"><span>Talk</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Change language variant" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">English</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Views"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/V8_(JavaScript_engine)"><span>Read</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=V8_(JavaScript_engine)&action=history" title="Past revisions of this page [h]" accesskey="h"><span>View history</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Tools" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Tools</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Tools</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">hide</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="More options" > <div class="vector-menu-heading"> Actions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/V8_(JavaScript_engine)"><span>Read</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit" title="Edit this page [e]" accesskey="e"><span>Edit</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=V8_(JavaScript_engine)&action=history"><span>View history</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Special:WhatLinksHere/V8_(JavaScript_engine)" title="List of all English Wikipedia pages containing links to this page [j]" accesskey="j"><span>What links here</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Special:RecentChangesLinked/V8_(JavaScript_engine)" rel="nofollow" title="Recent changes in pages linked from this page [k]" accesskey="k"><span>Related changes</span></a></li><li id="t-upload" class="mw-list-item"><a href="//en.wikipedia.org/wiki/Wikipedia:File_Upload_Wizard" title="Upload files [u]" accesskey="u"><span>Upload file</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q"><span>Special pages</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=V8_(JavaScript_engine)&oldid=1271945660" title="Permanent link to this revision of this page"><span>Permanent link</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=V8_(JavaScript_engine)&action=info" title="More information about this page"><span>Page information</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Special:CiteThisPage&page=V8_%28JavaScript_engine%29&id=1271945660&wpFormIdentifier=titleform" title="Information on how to cite this page"><span>Cite this page</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Special:UrlShortener&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FV8_%28JavaScript_engine%29"><span>Get shortened URL</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Special:QrCode&url=https%3A%2F%2Fen.wikipedia.org%2Fwiki%2FV8_%28JavaScript_engine%29"><span>Download QR code</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Print/export </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Special:DownloadAsPdf&page=V8_%28JavaScript_engine%29&action=show-download-screen" title="Download this page as a PDF file"><span>Download as PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=V8_(JavaScript_engine)&printable=yes" title="Printable version of this page [p]" accesskey="p"><span>Printable version</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In other projects </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:V8_(JavaScript_engine)" hreflang="en"><span>Wikimedia Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q574992" title="Structured data on this page hosted by Wikidata [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">JavaScript and WebAssembly engine</div> <p class="mw-empty-elt"> </p> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox vevent"><caption class="infobox-title summary">V8</caption><tbody><tr><td colspan="2" class="infobox-image logo"><span typeof="mw:File"><a href="/wiki/File:V8_JavaScript_engine_logo_2.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/V8_JavaScript_engine_logo_2.svg/64px-V8_JavaScript_engine_logo_2.svg.png" decoding="async" width="64" height="64" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/V8_JavaScript_engine_logo_2.svg/96px-V8_JavaScript_engine_logo_2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3f/V8_JavaScript_engine_logo_2.svg/128px-V8_JavaScript_engine_logo_2.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Programmer" title="Programmer">Developer(s)</a></th><td class="infobox-data"><a href="/wiki/Google" title="Google">Google</a><sup id="cite_ref-v8_doc_1-0" class="reference"><a href="#cite_note-v8_doc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">2 September 2008<span class="noprint">; 16 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">2008-09-02</span>)</span></td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1257001546"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">11.4<sup id="cite_ref-wikidata-e19b087eea73854757d86a770151693b4c5722e3-v18_2-0" class="reference"><a href="#cite_note-wikidata-e19b087eea73854757d86a770151693b4c5722e3-v18-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q574992?uselang=en#P348" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span> / 24 May 2023<span class="noprint">; 20 months ago</span><span style="display:none"> (<span class="bday dtstart published updated">24 May 2023</span>)</span></div></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Repository_(version_control)" title="Repository (version control)">Repository</a></th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li><span class="url"><a rel="nofollow" class="external text" href="https://chromium.googlesource.com/v8/v8">chromium<wbr />.googlesource<wbr />.com<wbr />/v8<wbr />/v8</a></span> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q574992#P1324" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></li></ul> </div></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data"><a href="/wiki/C%2B%2B" title="C++">C++</a><sup id="cite_ref-v8_doc_1-1" class="reference"><a href="#cite_note-v8_doc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data"><a href="/wiki/IA-32" title="IA-32">IA-32</a>, <a href="/wiki/X86-64" title="X86-64">x86-64</a>, <a href="/wiki/ARM_architecture" class="mw-redirect" title="ARM architecture">32-bit ARM</a>, <a href="/wiki/AArch64" title="AArch64">AArch64</a>, <a href="/wiki/MIPS_architecture" title="MIPS architecture">32-bit MIPS</a>, <a href="/wiki/MIPS64" class="mw-redirect" title="MIPS64">MIPS64</a>, <a href="/wiki/PowerPC" title="PowerPC">PowerPC</a>, <a href="/wiki/IBM_ESA/390" class="mw-redirect" title="IBM ESA/390">IBM ESA/390</a>, <a href="/wiki/Z/Architecture" title="Z/Architecture">z/Architecture</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_categories#Categorization_approaches" title="Software categories">Type</a></th><td class="infobox-data"><a href="/wiki/JavaScript_engine" title="JavaScript engine">JavaScript</a> and <a href="/wiki/WebAssembly" title="WebAssembly">WebAssembly</a> engine</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="/wiki/BSD_licences" class="mw-redirect" title="BSD licences">BSD</a><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://v8.dev/">v8<wbr />.dev</a></span> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q574992?uselang=en#P856" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr></tbody></table> <p><b>V8</b> is a <a href="/wiki/JavaScript_engine" title="JavaScript engine">JavaScript</a> and <a href="/wiki/WebAssembly" title="WebAssembly">WebAssembly</a> engine developed by <a href="/wiki/Google" title="Google">Google</a> for its <a href="/wiki/Google_Chrome" title="Google Chrome">Chrome</a> <a href="/wiki/Web_browser" title="Web browser">browser</a>.<sup id="cite_ref-v8_doc_1-2" class="reference"><a href="#cite_note-v8_doc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-comic_4-0" class="reference"><a href="#cite_note-comic-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> V8 is <a href="/wiki/Free_and_open-source_software" title="Free and open-source software">free and open-source software</a> that is part of the <a href="/wiki/Chromium_(web_browser)" title="Chromium (web browser)">Chromium</a> project and also used separately in non-browser contexts, notably the <a href="/wiki/Node.js" title="Node.js">Node.js</a> <a href="/wiki/Runtime_system" title="Runtime system">runtime system</a>.<sup id="cite_ref-v8_doc_1-3" class="reference"><a href="#cite_note-v8_doc-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Google" title="Google">Google</a> created V8 for its <a href="/wiki/Google_Chrome" title="Google Chrome">Chrome</a> browser, and both were first released in 2008.<sup id="cite_ref-comic_4-1" class="reference"><a href="#cite_note-comic-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The lead developer of V8 was <a href="/wiki/Lars_Bak_(computer_programmer)" title="Lars Bak (computer programmer)">Lars Bak</a>, and it was named after the powerful <a href="/wiki/V8_engine" title="V8 engine">car engine</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> For several years, Chrome was faster than other browsers at executing <a href="/wiki/JavaScript" title="JavaScript">JavaScript</a>.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>The V8 <a href="/wiki/Assembly_language#Assembler" title="Assembly language">assembler</a> is based on the <a href="/wiki/Strongtalk" title="Strongtalk">Strongtalk</a> assembler.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> On 7 December 2010, a new compiling infrastructure named Crankshaft was released, with speed improvements.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> In version 41 of Chrome in 2015, project TurboFan was added to provide more performance improvements with previously challenging workloads such as <a href="/wiki/Asm.js" title="Asm.js">asm.js</a>.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Much of V8's development is strongly inspired by the <a href="/wiki/HotSpot_(virtual_machine)" title="HotSpot (virtual machine)">Java HotSpot Virtual Machine</a> developed by <a href="/wiki/Sun_Microsystems" title="Sun Microsystems">Sun Microsystems</a>, with the newer execution pipelines being very similar to those of HotSpot's. </p><p>Support for the new <a href="/wiki/WebAssembly" title="WebAssembly">WebAssembly</a> language began in 2015.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p><p>In 2016, the Ignition interpreter was added to V8 with the design goal of reducing the <a href="/wiki/Memory_cell_(computing)" title="Memory cell (computing)">memory</a> usage on small memory <a href="/wiki/Android_(operating_system)" title="Android (operating system)">Android</a> phones in comparison with TurboFan and Crankshaft.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> Ignition is a <a href="/wiki/Register_machine" title="Register machine">register based machine</a> and shares a similar (albeit not the exact same) design to the templating interpreter utilized by HotSpot. </p><p>In 2017, V8 shipped a brand-new <a href="/wiki/Compiler" title="Compiler">compiler</a> pipeline, consisting of Ignition (the <a href="/wiki/Abstract_syntax_tree_interpreter" class="mw-redirect" title="Abstract syntax tree interpreter">interpreter</a>) and TurboFan (the <a href="/wiki/Program_optimization" title="Program optimization">optimizing compiler</a>). Starting with V8 version 5.9, Full-codegen (the early baseline compiler) and Crankshaft are no longer used in V8 for JavaScript execution, since the team believed they were no longer able to keep pace with new JavaScript language features and the optimizations those features required.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p><p>In 2021, a new tiered compilation pipeline was introduced with the release of the SparkPlug compiler, which supplements the existing TurboFan compiler within V8, in a direct parallel to the profiling C1 Compiler used by HotSpot. </p><p>In 2023, the Maglev <a href="/wiki/Static_single-assignment_form" title="Static single-assignment form">SSA</a>-based compiler was added, which is 10 times slower than Sparkplug but 10 times faster than TurboFan, bridging the gap between Sparkplug and TurboFan for less frequently run loops that do not get "hot" enough to be optimised by TurboFan, as is the case for most web applications that spend more time interacting with the browser than in JavaScript execution. <sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Design">Design</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit&section=2" title="Edit section: Design"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>V8 first generates an <a href="/wiki/Abstract_syntax_tree" title="Abstract syntax tree">abstract syntax tree</a> with its own parser.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Then, Ignition generates <a href="/wiki/Bytecode" title="Bytecode">bytecode</a> from this syntax tree using the internal V8 <a href="/wiki/Bytecode" title="Bytecode">bytecode</a> format.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> TurboFan compiles this bytecode into machine code. In other words, V8 compiles <a href="/wiki/ECMAScript" title="ECMAScript">ECMAScript</a> directly to native <a href="/wiki/Machine_code" title="Machine code">machine code</a> using <a href="/wiki/Just-in-time_compilation" title="Just-in-time compilation">just-in-time compilation</a> before executing it.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> The compiled code is additionally optimized (and re-optimized) dynamically at runtime, based on heuristics of the code's execution profile. Optimization techniques used include <a href="/wiki/Inlining" class="mw-redirect" title="Inlining">inlining</a>, <a href="/wiki/Copy_elision" title="Copy elision">elision</a> of expensive runtime properties, and <a href="/wiki/Inline_caching" title="Inline caching">inline caching</a>. The <a href="/wiki/Garbage_collection_(computer_science)" title="Garbage collection (computer science)">garbage collector</a> is a <a href="/wiki/Tracing_garbage_collection#Generational_GC_(ephemeral_GC)" title="Tracing garbage collection">generational</a> <a href="/wiki/Tracing_garbage_collection#Stop-the-world_vs._incremental_vs._concurrent" title="Tracing garbage collection">incremental</a> collector.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Usage">Usage</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit&section=3" title="Edit section: Usage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>V8 can compile to <a href="/wiki/X86_architecture" class="mw-redirect" title="X86 architecture">x86</a>, <a href="/wiki/ARM_architecture" class="mw-redirect" title="ARM architecture">ARM</a> or <a href="/wiki/MIPS_architecture" title="MIPS architecture">MIPS</a> <a href="/wiki/Instruction_set_architecture" title="Instruction set architecture">instruction set architectures</a> in both their <a href="/wiki/32-bit_computing" title="32-bit computing">32-bit</a> and <a href="/wiki/64-bit_computing" title="64-bit computing">64-bit</a> editions; it has additionally been ported to <a href="/wiki/PowerPC" title="PowerPC">PowerPC</a>,<sup id="cite_ref-ppc-and-z-support_20-0" class="reference"><a href="#cite_note-ppc-and-z-support-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> and to <a href="/wiki/IBM_ESA/390" class="mw-redirect" title="IBM ESA/390">IBM ESA/390</a> and <a href="/wiki/Z/Architecture" title="Z/Architecture">z/Architecture</a>,<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-ppc-and-z-support_20-1" class="reference"><a href="#cite_note-ppc-and-z-support-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> for use in servers.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> </p><p>V8 can be used in a browser or integrated into independent projects. V8 is used in the following software: </p> <ul><li><a href="/wiki/Chromium_(web_browser)" title="Chromium (web browser)">Chromium</a>-based <a href="/wiki/Web_browser" title="Web browser">web browsers</a> - <a href="/wiki/Google_Chrome" title="Google Chrome">Google Chrome</a>, <a href="/wiki/Brave_(web_browser)" title="Brave (web browser)">Brave</a>, <a href="/wiki/Opera_(web_browser)" title="Opera (web browser)">Opera</a>, <a href="/wiki/Vivaldi_(web_browser)" title="Vivaldi (web browser)">Vivaldi</a> and <a href="/wiki/Microsoft_Edge" title="Microsoft Edge">Microsoft Edge</a>.</li> <li>Cloud-based environments, like <a href="/wiki/Google_Apps_Script" title="Google Apps Script">Google Apps Script</a><sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Couchbase_Server" title="Couchbase Server">Couchbase</a> database server</li> <li><a href="/wiki/Deno_(software)" title="Deno (software)">Deno</a> runtime environment<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Electron_(software_framework)" title="Electron (software framework)">Electron</a> desktop application framework, used by the <a href="/wiki/Atom_(text_editor)" title="Atom (text editor)">Atom</a> and <a href="/wiki/Visual_Studio_Code" title="Visual Studio Code">Visual Studio Code</a> text editors</li> <li><a href="/wiki/MarkLogic_Server" title="MarkLogic Server">MarkLogic</a> database server</li> <li><a href="/wiki/NativeScript" title="NativeScript">NativeScript</a> mobile application framework<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Node.js" title="Node.js">Node.js</a> runtime environment<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup></li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Blink_(browser_engine)" title="Blink (browser engine)">Blink</a>, the Chromium browser engine</li></ul> <style data-mw-deduplicate="TemplateStyles:r1266661725">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/28px-Free_and_open-source_software_logo_%282009%29.svg.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/42px-Free_and_open-source_software_logo_%282009%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/56px-Free_and_open-source_software_logo_%282009%29.svg.png 2x" data-file-width="512" data-file-height="512" /></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:Free_and_open-source_software" title="Portal:Free and open-source software">Free and open-source software portal</a></span></li><li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Crystal_Clear_app_linneighborhood.svg" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Crystal_Clear_app_linneighborhood.svg/28px-Crystal_Clear_app_linneighborhood.svg.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Crystal_Clear_app_linneighborhood.svg/42px-Crystal_Clear_app_linneighborhood.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Crystal_Clear_app_linneighborhood.svg/56px-Crystal_Clear_app_linneighborhood.svg.png 2x" data-file-width="407" data-file-height="407" /></a></span></span><span class="portalbox-link"><a href="/wiki/Portal:Internet" title="Portal:Internet">Internet portal</a></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-v8_doc-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-v8_doc_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-v8_doc_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-v8_doc_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-v8_doc_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://v8.dev/docs">"Documentation · V8"</a>. Google<span class="reference-accessdate">. Retrieved <span class="nowrap">3 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Documentation+%C2%B7+V8&rft.pub=Google&rft_id=https%3A%2F%2Fv8.dev%2Fdocs&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-wikidata-e19b087eea73854757d86a770151693b4c5722e3-v18-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-wikidata-e19b087eea73854757d86a770151693b4c5722e3-v18_2-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://chromestatus.com/roadmap">"Chrome Platform Status"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">29 June</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Chrome+Platform+Status&rft_id=https%3A%2F%2Fchromestatus.com%2Froadmap&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/v8/v8/blob/master/LICENSE.v8">"v8/LICENSE.v8 at master"</a>. Github.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=v8%2FLICENSE.v8+at+master&rft.pub=Github&rft_id=https%3A%2F%2Fgithub.com%2Fv8%2Fv8%2Fblob%2Fmaster%2FLICENSE.v8&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-comic-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-comic_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-comic_4-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLenssen2008" class="citation web cs1">Lenssen, Philipp (1 September 2008). <a rel="nofollow" class="external text" href="http://blogoscoped.com/google-chrome/">"Google on Google Chrome - comic book"</a>. <i>Google Blogoscoped</i><span class="reference-accessdate">. Retrieved <span class="nowrap">17 August</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Google+Blogoscoped&rft.atitle=Google+on+Google+Chrome+-+comic+book&rft.date=2008-09-01&rft.aulast=Lenssen&rft.aufirst=Philipp&rft_id=http%3A%2F%2Fblogoscoped.com%2Fgoogle-chrome%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=hWhMKalEicY">"V8: an open source JavaScript engine"</a>. <i>YouTube</i>. Google. 15 September 2008<span class="reference-accessdate">. Retrieved <span class="nowrap">15 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=YouTube&rft.atitle=V8%3A+an+open+source+JavaScript+engine&rft.date=2008-09-15&rft_id=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DhWhMKalEicY&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120502043027/http://www.pcgameshardware.com/aid,687738/Big-browser-comparison-test-Internet-Explorer-vs-Firefox-Opera-Safari-and-Chrome-Update-Firefox-35-Final/Practice/">"Big browser comparison test: Internet Explorer vs. Firefox, Opera, Safari and Chrome"</a>. <i>PC Games Hardware</i>. Computec Media AG. 3 July 2009. Archived from <a rel="nofollow" class="external text" href="https://www.pcgameshardware.com/aid,687738/Big-browser-comparison-test-Internet-Explorer-vs-Firefox-Opera-Safari-and-Chrome-Update-Firefox-35-Final/Practice/">the original</a> on 2 May 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">28 June</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=PC+Games+Hardware&rft.atitle=Big+browser+comparison+test%3A+Internet+Explorer+vs.+Firefox%2C+Opera%2C+Safari+and+Chrome&rft.date=2009-07-03&rft_id=https%3A%2F%2Fwww.pcgameshardware.com%2Faid%2C687738%2FBig-browser-comparison-test-Internet-Explorer-vs-Firefox-Opera-Safari-and-Chrome-Update-Firefox-35-Final%2FPractice%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPurdy2009" class="citation web cs1">Purdy, Kevin (11 June 2009). <a rel="nofollow" class="external text" href="https://lifehacker.com/lifehacker-speed-tests-safari-4-chrome-2-and-more-5286869">"Lifehacker Speed Tests: Safari 4, Chrome 2"</a>. <i><a href="/wiki/Lifehacker" title="Lifehacker">Lifehacker</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210414095403/https://lifehacker.com/lifehacker-speed-tests-safari-4-chrome-2-and-more-5286869">Archived</a> from the original on 14 April 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">8 May</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Lifehacker&rft.atitle=Lifehacker+Speed+Tests%3A+Safari+4%2C+Chrome+2&rft.date=2009-06-11&rft.aulast=Purdy&rft.aufirst=Kevin&rft_id=https%3A%2F%2Flifehacker.com%2Flifehacker-speed-tests-safari-4-chrome-2-and-more-5286869&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://www.wired.com/2010/09/mozilla-asks-are-we-fast-yet/">"Mozilla asks, 'Are we fast yet?'<span class="cs1-kern-right"></span>"</a>. <i>Wired</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180622213244/https://www.wired.com/2010/09/mozilla-asks-are-we-fast-yet/">Archived</a> from the original on 22 June 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">18 January</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wired&rft.atitle=Mozilla+asks%2C+%27Are+we+fast+yet%3F%27&rft_id=https%3A%2F%2Fwww.wired.com%2F2010%2F09%2Fmozilla-asks-are-we-fast-yet%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20100722105022/http://code.google.com/p/v8/source/browse/trunk/LICENSE">"V8 JavaScript Engine: License"</a>. <i><a href="/wiki/Google_Code" class="mw-redirect" title="Google Code">Google Code</a></i>. Archived from <a rel="nofollow" class="external text" href="https://code.google.com/p/v8/source/browse/trunk/LICENSE">the original</a> on 22 July 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">17 August</span> 2010</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Google+Code&rft.atitle=V8+JavaScript+Engine%3A+License&rft_id=https%3A%2F%2Fcode.google.com%2Fp%2Fv8%2Fsource%2Fbrowse%2Ftrunk%2FLICENSE&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blog.chromium.org/2010/12/new-crankshaft-for-v8.html">"A New Crankshaft for V8"</a>. <i>Chromium Blog</i>. 7 December 2010<span class="reference-accessdate">. Retrieved <span class="nowrap">22 April</span> 2011</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Chromium+Blog&rft.atitle=A+New+Crankshaft+for+V8&rft.date=2010-12-07&rft_id=https%3A%2F%2Fblog.chromium.org%2F2010%2F12%2Fnew-crankshaft-for-v8.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blog.chromium.org/2015/07/revving-up-javascript-performance-with.html">"Revving up JavaScript performance with TurboFan"</a>. 7 July 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">5 March</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Revving+up+JavaScript+performance+with+TurboFan&rft.date=2015-07-07&rft_id=https%3A%2F%2Fblog.chromium.org%2F2015%2F07%2Frevving-up-javascript-performance-with.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://v8.dev/blog/webassembly-experimental">"Experimental support for WebAssembly in V8"</a>. <i>v8.dev</i><span class="reference-accessdate">. Retrieved <span class="nowrap">12 March</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=v8.dev&rft.atitle=Experimental+support+for+WebAssembly+in+V8&rft_id=https%3A%2F%2Fv8.dev%2Fblog%2Fwebassembly-experimental&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=r5OWCtuKiAk">"BlinkOn 6 Day 1 Talk 2: Ignition - an interpreter for V8"</a>. <i><a href="/wiki/YouTube" title="YouTube">YouTube</a></i>. 26 June 2016. <a rel="nofollow" class="external text" href="https://ghostarchive.org/varchive/youtube/20211221/r5OWCtuKiAk">Archived</a> from the original on 21 December 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">2 September</span> 2016</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=YouTube&rft.atitle=BlinkOn+6+Day+1+Talk+2%3A+Ignition+-+an+interpreter+for+V8&rft.date=2016-06-26&rft_id=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dr5OWCtuKiAk&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://v8project.blogspot.com/2017/05/launching-ignition-and-turbofan.html">"Launching Ignition and TurboFan"</a>. 16 May 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">13 July</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Launching+Ignition+and+TurboFan&rft.date=2017-05-16&rft_id=https%3A%2F%2Fv8project.blogspot.com%2F2017%2F05%2Flaunching-ignition-and-turbofan.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://v8.dev/blog/maglev">"Maglev - V8's Fastest Optimizing JIT"</a>. 5 December 2023<span class="reference-accessdate">. Retrieved <span class="nowrap">26 January</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Maglev+-+V8%27s+Fastest+Optimizing+JIT&rft.date=2023-12-05&rft_id=https%3A%2F%2Fv8.dev%2Fblog%2Fmaglev&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVerwaest2019" class="citation web cs1">Verwaest, Toon (25 March 2019). <a rel="nofollow" class="external text" href="https://v8.dev/blog/scanner">"Blazingly fast parsing, part 1: optimizing the scanner · V8"</a>. <i>v8.dev</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210421221018/https://v8.dev/blog/scanner">Archived</a> from the original on 21 April 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">1 June</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=v8.dev&rft.atitle=Blazingly+fast+parsing%2C+part+1%3A+optimizing+the+scanner+%C2%B7+V8&rft.date=2019-03-25&rft.aulast=Verwaest&rft.aufirst=Toon&rft_id=https%3A%2F%2Fv8.dev%2Fblog%2Fscanner&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHinkelmann2017" class="citation web cs1">Hinkelmann, Franziska (19 December 2017). <a rel="nofollow" class="external text" href="https://medium.com/dailyjs/understanding-v8s-bytecode-317d46c94775">"Understanding V8's Bytecode"</a>. <i>Medium</i><span class="reference-accessdate">. Retrieved <span class="nowrap">17 October</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Medium&rft.atitle=Understanding+V8%27s+Bytecode&rft.date=2017-12-19&rft.aulast=Hinkelmann&rft.aufirst=Franziska&rft_id=https%3A%2F%2Fmedium.com%2Fdailyjs%2Funderstanding-v8s-bytecode-317d46c94775&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://v8.dev/blog/ignition-interpreter">"Firing up the Ignition interpreter · V8"</a>. <i>v8.dev</i><span class="reference-accessdate">. Retrieved <span class="nowrap">30 September</span> 2020</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=v8.dev&rft.atitle=Firing+up+the+Ignition+interpreter+%C2%B7+V8&rft_id=https%3A%2F%2Fv8.dev%2Fblog%2Fignition-interpreter&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blog.chromium.org/2011/11/game-changer-for-interactive.html">"A game changer for interactive performance"</a>. <i>blog.chromium.org</i>. 21 November 2011<span class="reference-accessdate">. Retrieved <span class="nowrap">6 February</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=blog.chromium.org&rft.atitle=A+game+changer+for+interactive+performance&rft.date=2011-11-21&rft_id=https%3A%2F%2Fblog.chromium.org%2F2011%2F11%2Fgame-changer-for-interactive.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-ppc-and-z-support-20"><span class="mw-cite-backlink">^ <a href="#cite_ref-ppc-and-z-support_20-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-ppc-and-z-support_20-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20150912183958/https://developer.ibm.com/opentech/2015/06/30/ppc-support-for-google-v8-goes-mainstream/">"PPC support for Google V8 goes mainstream"</a>. 30 June 2015. Archived from <a rel="nofollow" class="external text" href="https://developer.ibm.com/opentech/2015/06/30/ppc-support-for-google-v8-goes-mainstream/">the original</a> on 12 September 2015.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=PPC+support+for+Google+V8+goes+mainstream&rft.date=2015-06-30&rft_id=https%3A%2F%2Fdeveloper.ibm.com%2Fopentech%2F2015%2F06%2F30%2Fppc-support-for-google-v8-goes-mainstream%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/ibmruntimes/v8ppc">"GitHub - ibmruntimes/v8ppc: Port of Google V8 javascript engine to PowerPC®"</a>. 21 April 2019 – via GitHub.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=GitHub+-+ibmruntimes%2Fv8ppc%3A+Port+of+Google+V8+javascript+engine+to+PowerPC%C2%AE.&rft.date=2019-04-21&rft_id=https%3A%2F%2Fgithub.com%2Fibmruntimes%2Fv8ppc&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/ibmruntimes/v8z">"Port of Google V8 JavaScript engine to z/OS. The Linux on Z port is maintained in the community: ibmruntimes/v8z"</a>. 2 April 2019 – via GitHub.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Port+of+Google+V8+JavaScript+engine+to+z%2FOS.+The+Linux+on+Z+port+is+maintained+in+the+community%3A+ibmruntimes%2Fv8z&rft.date=2019-04-02&rft_id=https%3A%2F%2Fgithub.com%2Fibmruntimes%2Fv8z&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20121022062411/http://v8.googlecode.com/svn/trunk/ChangeLog">"V8 Changelog v3.8.2"</a>. Archived from <a rel="nofollow" class="external text" href="http://v8.googlecode.com/svn/trunk/ChangeLog">the original</a> on 22 October 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">23 October</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=V8+Changelog+v3.8.2&rft_id=http%3A%2F%2Fv8.googlecode.com%2Fsvn%2Ftrunk%2FChangeLog&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://developers.google.com/apps-script/guides/v8-runtime">"V8 Runtime Overview | Apps Script"</a>. <i>Google for Developers</i><span class="reference-accessdate">. Retrieved <span class="nowrap">26 January</span> 2025</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Google+for+Developers&rft.atitle=V8+Runtime+Overview+%7C+Apps+Script&rft_id=https%3A%2F%2Fdevelopers.google.com%2Fapps-script%2Fguides%2Fv8-runtime&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/denoland/deno">"A secure JavaScript/TypeScript runtime built with V8, Rust, and Tokio: denoland/deno"</a>. 8 July 2019 – via GitHub.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=A+secure+JavaScript%2FTypeScript+runtime+built+with+V8%2C+Rust%2C+and+Tokio%3A+denoland%2Fdeno&rft.date=2019-07-08&rft_id=https%3A%2F%2Fgithub.com%2Fdenoland%2Fdeno&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://docs.nativescript.org/core-concepts/android-runtime/overview">"Overview - NativeScript Docs"</a>. <i>docs.nativescript.org</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=docs.nativescript.org&rft.atitle=Overview+-+NativeScript+Docs&rft_id=https%3A%2F%2Fdocs.nativescript.org%2Fcore-concepts%2Fandroid-runtime%2Foverview&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJolie_O'Dell2011" class="citation web cs1">Jolie O'Dell (10 March 2011). <a rel="nofollow" class="external text" href="http://mashable.com/2011/03/10/node-js/">"Why Everyone Is Talking About Node"</a>. Mashable.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Why+Everyone+Is+Talking+About+Node&rft.pub=Mashable&rft.date=2011-03-10&rft.au=Jolie+O%27Dell&rft_id=http%3A%2F%2Fmashable.com%2F2011%2F03%2F10%2Fnode-js%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AV8+%28JavaScript+engine%29" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=V8_(JavaScript_engine)&action=edit&section=6" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Commons-logo.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:V8_(JavaScript_engine)" class="extiw" title="commons:Category:V8 (JavaScript engine)">V8 (JavaScript engine)</a></span>.</div></div> </div> <ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://v8.dev/">Official website</a></span></span> <span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q574992#P856" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": "}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist dd:last-child::after,.mw-parser-output .hlist dt:last-child::after,.mw-parser-output .hlist li:last-child::after{content:none}.mw-parser-output .hlist dd dd:first-child::before,.mw-parser-output .hlist dd dt:first-child::before,.mw-parser-output .hlist dd li:first-child::before,.mw-parser-output .hlist dt dd:first-child::before,.mw-parser-output .hlist dt dt:first-child::before,.mw-parser-output .hlist dt li:first-child::before,.mw-parser-output .hlist li dd:first-child::before,.mw-parser-output .hlist li dt:first-child::before,.mw-parser-output .hlist li li:first-child::before{content:" (";font-weight:normal}.mw-parser-output .hlist dd dd:last-child::after,.mw-parser-output .hlist dd dt:last-child::after,.mw-parser-output .hlist dd li:last-child::after,.mw-parser-output .hlist dt dd:last-child::after,.mw-parser-output .hlist dt dt:last-child::after,.mw-parser-output .hlist dt li:last-child::after,.mw-parser-output .hlist li dd:last-child::after,.mw-parser-output .hlist li dt:last-child::after,.mw-parser-output .hlist li li:last-child::after{content:")";font-weight:normal}.mw-parser-output .hlist ol{counter-reset:listitem}.mw-parser-output .hlist ol>li{counter-increment:listitem}.mw-parser-output .hlist ol>li::before{content:" "counter(listitem)"\a0 "}.mw-parser-output .hlist dd ol>li:first-child::before,.mw-parser-output .hlist dt ol>li:first-child::before,.mw-parser-output .hlist li ol>li:first-child::before{content:" ("counter(listitem)"\a0 "}</style><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output .navbox-list-with-group{text-align:left;border-left-width:2px;border-left-style:solid}.mw-parser-output tr+tr>.navbox-abovebelow,.mw-parser-output tr+tr>.navbox-group,.mw-parser-output tr+tr>.navbox-image,.mw-parser-output tr+tr>.navbox-list{border-top:2px solid #fdfdfd}.mw-parser-output .navbox-title{background-color:#ccf}.mw-parser-output .navbox-abovebelow,.mw-parser-output .navbox-group,.mw-parser-output .navbox-subgroup .navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div><div role="navigation" class="navbox" aria-labelledby="ECMAScript564" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:ECMAScript" title="Template:ECMAScript"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:ECMAScript" title="Template talk:ECMAScript"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:ECMAScript" title="Special:EditPage/Template:ECMAScript"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="ECMAScript564" style="font-size:114%;margin:0 4em"><a href="/wiki/ECMAScript" title="ECMAScript">ECMAScript</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Dialects</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ActionScript" title="ActionScript">ActionScript</a></li> <li><a href="/wiki/Caja_project" title="Caja project">Caja</a></li> <li><a href="/wiki/JavaScript" title="JavaScript">JavaScript</a> <ul><li><a href="/wiki/JavaScript_engine" title="JavaScript engine">engines</a></li> <li><a href="/wiki/Asm.js" title="Asm.js">asm.js</a></li></ul></li> <li><a href="/wiki/JScript" title="JScript">JScript</a></li> <li><a href="/wiki/JScript_.NET" title="JScript .NET">JScript .NET</a></li> <li><a href="/wiki/QtScript" title="QtScript">QtScript</a></li> <li><a href="/wiki/TypeScript" title="TypeScript">TypeScript</a></li> <li><a href="/wiki/WMLScript" title="WMLScript">WMLScript</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_ECMAScript_engines" title="List of ECMAScript engines">Engines</a><br />(comparison)</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Presto_(layout_engine)#JavaScript_engines" class="mw-redirect" title="Presto (layout engine)">Carakan</a></li> <li><a href="/wiki/Presto_(layout_engine)#JavaScript_engines" class="mw-redirect" title="Presto (layout engine)">Futhark</a></li> <li><a href="/wiki/InScript_(JavaScript_engine)" title="InScript (JavaScript engine)">InScript</a></li> <li><a href="/wiki/WebKit#JavaScriptCore" title="WebKit">JavaScriptCore</a></li> <li><a href="/wiki/JScript" title="JScript">JScript</a></li> <li><a href="/wiki/KJS_(software)" class="mw-redirect" title="KJS (software)">KJS</a></li> <li><a href="/wiki/Presto_(layout_engine)#ECMAScript_engines" class="mw-redirect" title="Presto (layout engine)">Linear B</a></li> <li><a href="/wiki/QtScript" title="QtScript">QtScript</a></li> <li><a href="/wiki/Rhino_(JavaScript_engine)" title="Rhino (JavaScript engine)">Rhino</a></li> <li><a href="/wiki/SpiderMonkey" title="SpiderMonkey">SpiderMonkey</a> <ul><li><a href="/wiki/SpiderMonkey#TraceMonkey" title="SpiderMonkey">TraceMonkey</a></li> <li><a href="/wiki/SpiderMonkey#JägerMonkey" title="SpiderMonkey">JägerMonkey</a></li></ul></li> <li><a href="/wiki/Tamarin_(software)" title="Tamarin (software)">Tamarin</a></li> <li><a class="mw-selflink selflink">V8</a></li> <li><a href="/wiki/Chakra_(JavaScript_engine)" title="Chakra (JavaScript engine)">ChakraCore</a> <ul><li><a href="/wiki/Chakra_(JScript_engine)" title="Chakra (JScript engine)">Chakra</a></li></ul></li> <li><a href="/wiki/JScript_.NET" title="JScript .NET">JScript .NET</a></li> <li><a href="/wiki/Nashorn_(JavaScript_engine)" title="Nashorn (JavaScript engine)">Nashorn</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Software_framework" title="Software framework">Frameworks</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Client-side_JavaScript" class="mw-redirect" title="Client-side JavaScript">Client-side</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dojo_Toolkit" title="Dojo Toolkit">Dojo</a></li> <li><a href="/wiki/Echo_(framework)" title="Echo (framework)">Echo</a></li> <li><a href="/wiki/Ext_JS" title="Ext JS">Ext JS</a></li> <li><a href="/wiki/Google_Web_Toolkit" title="Google Web Toolkit">Google Web Toolkit</a></li> <li><a href="/wiki/JQuery" title="JQuery">jQuery</a></li> <li><a href="/wiki/Lively_Kernel" title="Lively Kernel">Lively Kernel</a></li> <li>midori</li> <li><a href="/wiki/MochiKit" title="MochiKit">MochiKit</a></li> <li><a href="/wiki/MooTools" title="MooTools">MooTools</a></li> <li><a href="/wiki/Prototype_JavaScript_Framework" title="Prototype JavaScript Framework">Prototype</a></li> <li><a href="/wiki/Pyjs" title="Pyjs">Pyjs</a></li> <li><a href="/wiki/Qooxdoo" title="Qooxdoo">qooxdoo</a></li> <li class="mw-empty-elt"></li> <li><a href="/wiki/SproutCore" title="SproutCore">SproutCore</a></li> <li><a href="/wiki/Spry_framework" title="Spry framework">Spry</a></li> <li>Wakanda Framework</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Server-side_JavaScript" class="mw-redirect" title="Server-side JavaScript">Server-side</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Node.js" title="Node.js">Node.js</a></li> <li><a href="/wiki/Deno_(software)" title="Deno (software)">Deno</a></li> <li><a href="/wiki/Bun_(software)" title="Bun (software)">Bun</a></li> <li><a href="/wiki/Jaxer#Aptana_Jaxer" class="mw-redirect" title="Jaxer">Jaxer</a></li> <li><a href="/wiki/AppJet" title="AppJet">AppJet</a></li> <li>WakandaDB</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Multiple</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Cappuccino</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/JavaScript_library" title="JavaScript library">Libraries</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Backbone.js" title="Backbone.js">Backbone.js</a></li> <li><a href="/wiki/SWFObject" title="SWFObject">SWFObject</a></li> <li><a href="/wiki/Underscore.js" title="Underscore.js">Underscore.js</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Brendan_Eich" title="Brendan Eich">Brendan Eich</a></li> <li><a href="/wiki/Douglas_Crockford" title="Douglas Crockford">Douglas Crockford</a></li> <li><a href="/wiki/John_Resig" title="John Resig">John Resig</a></li> <li>Scott Isaacs</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dynamic_HTML" title="Dynamic HTML">DHTML</a></li> <li><a href="/wiki/Ecma_International" title="Ecma International">Ecma International</a></li> <li><a href="/wiki/JSDoc" title="JSDoc">JSDoc</a></li> <li><a href="/wiki/JSGI" title="JSGI">JSGI</a></li> <li><a href="/wiki/JSHint" title="JSHint">JSHint</a></li> <li><a href="/wiki/JSLint" title="JSLint">JSLint</a></li> <li><a href="/wiki/JSON" title="JSON">JSON</a></li> <li><a href="/wiki/JavaScript_Style_Sheets" title="JavaScript Style Sheets">JSSS</a></li> <li><a href="/wiki/Sputnik_(JavaScript_conformance_test)" title="Sputnik (JavaScript conformance test)">Sputnik</a></li> <li><a href="/wiki/Browser_speed_test#SunSpider" title="Browser speed test">SunSpider</a></li> <li><a href="/wiki/Asynchronous_module_definition" title="Asynchronous module definition">Asynchronous module definition</a></li> <li><a href="/wiki/CommonJS" title="CommonJS">CommonJS</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <dl><dt><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/23px-Symbol_list_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/31px-Symbol_list_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> Lists</dt> <dd><a href="/wiki/List_of_JavaScript_libraries" title="List of JavaScript libraries">JavaScript libraries</a></dd> <dd><a href="/wiki/List_of_Ajax_frameworks#JavaScript" title="List of Ajax frameworks">Ajax frameworks</a></dd> <dt><span class="noviewer" typeof="mw:File"><span title="List-Class article"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/16px-Symbol_list_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/23px-Symbol_list_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/d/db/Symbol_list_class.svg/31px-Symbol_list_class.svg.png 2x" data-file-width="180" data-file-height="185" /></span></span> Comparisons</dt> <dd><a href="/wiki/Comparison_of_JavaScript_frameworks" class="mw-redirect" title="Comparison of JavaScript frameworks">JavaScript frameworks</a></dd> <dd><a href="/wiki/Comparison_of_server-side_JavaScript_solutions" class="mw-redirect" title="Comparison of server-side JavaScript solutions">server-side JavaScript</a></dd></dl> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Google_free_and_open-source_software55" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Google_FOSS" title="Template:Google FOSS"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Google_FOSS" title="Template talk:Google FOSS"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Google_FOSS" title="Special:EditPage/Template:Google FOSS"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Google_free_and_open-source_software55" style="font-size:114%;margin:0 4em"><a href="/wiki/Google" title="Google">Google</a> free and open-source software</div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Software</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Applications</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Chromium_(web_browser)" title="Chromium (web browser)">Chromium</a></li> <li><a href="/wiki/Gemini_(language_model)" title="Gemini (language model)">Gemma</a></li> <li><a href="/wiki/OpenRefine" title="OpenRefine">OpenRefine</a></li> <li><a href="/wiki/Tesseract_(software)" title="Tesseract (software)">Tesseract</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Programming languages</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Carbon_(programming_language)" title="Carbon (programming language)">Carbon</a></li> <li><a href="/wiki/Dart_(programming_language)" title="Dart (programming language)">Dart</a></li> <li><a href="/wiki/Go_(programming_language)" title="Go (programming language)">Go</a></li> <li><a href="/wiki/Sawzall_(programming_language)" title="Sawzall (programming language)">Sawzall</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Frameworks and<br />development tools</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Accelerated_Mobile_Pages" title="Accelerated Mobile Pages">AMP</a></li> <li><a href="/wiki/Angular_(web_framework)" title="Angular (web framework)">Angular</a></li> <li><a href="/wiki/AngularJS" title="AngularJS">AngularJS</a></li> <li><a href="/wiki/Apache_Beam" title="Apache Beam">Beam</a></li> <li><a href="/wiki/Bazel_(software)" title="Bazel (software)">Bazel</a></li> <li><a href="/wiki/Blockly" title="Blockly">Blockly</a></li> <li><a href="/wiki/Google_Closure_Tools" title="Google Closure Tools">Closure Tools</a></li> <li><a href="/wiki/Cpplint" title="Cpplint">Cpplint</a></li> <li><a href="/wiki/FlatBuffers" title="FlatBuffers">FlatBuffers</a></li> <li><a href="/wiki/Flutter_(software)" title="Flutter (software)">Flutter</a></li> <li><a href="/wiki/Ganeti" title="Ganeti">Ganeti</a></li> <li><a href="/wiki/Gears_(software)" title="Gears (software)">Gears</a></li> <li><a href="/wiki/Gerrit_(software)" title="Gerrit (software)">Gerrit</a></li> <li><a href="/wiki/GLOP" title="GLOP">GLOP</a></li> <li><a href="/wiki/GRPC" title="GRPC">gRPC</a></li> <li><a href="/wiki/Gson" title="Gson">Gson</a></li> <li><a href="/wiki/Google_Guava" title="Google Guava">Guava</a></li> <li><a href="/wiki/Guetzli" title="Guetzli">Guetzli</a></li> <li><a href="/wiki/Google_Guice" title="Google Guice">Guice</a></li> <li><a href="/wiki/GVisor" title="GVisor">gVisor</a></li> <li><a href="/wiki/Kubernetes" title="Kubernetes">Kubernetes</a></li> <li><a href="/wiki/LevelDB" title="LevelDB">LevelDB</a></li> <li><a href="/wiki/Libvpx" title="Libvpx">libvpx</a></li> <li><a href="/wiki/Lighthouse_(software)" title="Lighthouse (software)">Lighthouse</a></li> <li><a href="/wiki/Google_Native_Client" title="Google Native Client">NaCl</a></li> <li><a href="/wiki/Namebench" title="Namebench">Namebench</a></li> <li><a href="/wiki/Nomulus" title="Nomulus">Nomulus</a></li> <li><a href="/wiki/OR-Tools" title="OR-Tools">OR-Tools</a></li> <li><a href="/wiki/Polymer_(library)" title="Polymer (library)">Polymer</a></li> <li><a href="/wiki/Protocol_Buffers" title="Protocol Buffers">Protocol Buffers</a></li> <li><a href="/wiki/TensorFlow" title="TensorFlow">TensorFlow</a></li> <li><a class="mw-selflink selflink">V8</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Operating systems</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Android_(operating_system)" title="Android (operating system)">Android</a></li> <li><a href="/wiki/ChromiumOS" title="ChromiumOS">ChromiumOS</a></li> <li><a href="/wiki/Fuchsia_(operating_system)" title="Fuchsia (operating system)">Fuchsia</a></li> <li><a href="/wiki/GLinux" title="GLinux">gLinux</a></li> <li><a href="/wiki/Goobuntu" title="Goobuntu">Goobuntu</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Google_Code-in" title="Google Code-in">Code-in</a></li> <li><i><a href="/wiki/Google_LLC_v._Oracle_America,_Inc." title="Google LLC v. Oracle America, Inc.">Google LLC v. Oracle America, Inc.</a></i></li> <li><a href="/wiki/Open_Source_Security_Foundation" title="Open Source Security Foundation">Open Source Security Foundation</a></li> <li><a href="/wiki/Google_Summer_of_Code" title="Google Summer of Code">Summer of Code</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Node.js47" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="3"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:NodeJs" title="Template:NodeJs"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:NodeJs" title="Template talk:NodeJs"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:NodeJs" title="Special:EditPage/Template:NodeJs"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Node.js47" style="font-size:114%;margin:0 4em"><a href="/wiki/Node.js" title="Node.js">Node.js</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Platform</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Node.js" title="Node.js">Node.js</a></li> <li><a href="/wiki/Npm" title="Npm">npm</a></li> <li><a class="mw-selflink selflink">V8</a></li> <li><a href="/wiki/CommonJS" title="CommonJS">CommonJS</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Node.js_logo.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Node.js_logo.svg/100px-Node.js_logo.svg.png" decoding="async" width="100" height="61" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Node.js_logo.svg/150px-Node.js_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Node.js_logo.svg/200px-Node.js_logo.svg.png 2x" data-file-width="590" data-file-height="361" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Frameworks</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MEAN_(software_bundle)" class="mw-redirect" title="MEAN (software bundle)">MEAN</a> <ul><li><a href="/wiki/MongoDB" title="MongoDB">MongoDB</a></li> <li><a href="/wiki/Express.js" title="Express.js">Express.js</a></li> <li><a href="/wiki/AngularJS" title="AngularJS">AngularJS</a>/<a href="/wiki/Angular_(web_framework)" title="Angular (web framework)">Angular</a></li></ul></li> <li>MEEN (substituted with <a href="/wiki/Ember.js" title="Ember.js">Ember.js</a>)</li> <li><a href="/wiki/Backbone.js" title="Backbone.js">Backbone.js</a></li> <li><a href="/wiki/Fastify" title="Fastify">Fastify</a></li> <li><a href="/wiki/Meteor_(web_framework)" title="Meteor (web framework)">Meteor</a></li> <li><a href="/wiki/Sails.js" title="Sails.js">Sails.js</a> (uses Express.js)</li> <li><a href="/wiki/NestJS" title="NestJS">NestJS</a></li> <li><a href="/wiki/Next.js" title="Next.js">Next.js</a></li> <li><a href="/wiki/Nuxt.js" class="mw-redirect" title="Nuxt.js">Nuxt.js</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Libraries</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Lodash" title="Lodash">Lodash</a></li> <li><a href="/wiki/Underscore.js" title="Underscore.js">Underscore.js</a></li> <li><a href="/wiki/React.js" class="mw-redirect" title="React.js">React.js</a></li> <li><a href="/wiki/Vue.js" title="Vue.js">Vue.js</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Languages</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/JavaScript" title="JavaScript">JavaScript</a></li> <li><a href="/wiki/CoffeeScript" title="CoffeeScript">CoffeeScript</a></li> <li><a href="/wiki/TypeScript" title="TypeScript">TypeScript</a></li> <li><a href="/wiki/WebAssembly" title="WebAssembly">WebAssembly</a> <ul><li><a href="/wiki/AssemblyScript" title="AssemblyScript">AssemblyScript</a></li> <li><a href="/wiki/C_(programming_language)" title="C (programming language)">C</a></li> <li><a href="/wiki/Rust_(programming_language)" title="Rust (programming language)">Rust</a></li></ul></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=V8_(JavaScript_engine)&oldid=1271945660">https://en.wikipedia.org/w/index.php?title=V8_(JavaScript_engine)&oldid=1271945660</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:2008_software" title="Category:2008 software">2008 software</a></li><li><a href="/wiki/Category:Free_and_open_source_interpreters" title="Category:Free and open source interpreters">Free and open source interpreters</a></li><li><a href="/wiki/Category:Google_Chrome" title="Category:Google Chrome">Google Chrome</a></li><li><a href="/wiki/Category:Google_software" title="Category:Google software">Google software</a></li><li><a href="/wiki/Category:JavaScript_engines" title="Category:JavaScript engines">JavaScript engines</a></li><li><a href="/wiki/Category:Software_using_the_BSD_license" title="Category:Software using the BSD license">Software using the BSD license</a></li><li><a href="/wiki/Category:Virtual_machines" title="Category:Virtual machines">Virtual machines</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_is_different_from_Wikidata" title="Category:Short description is different from Wikidata">Short description is different from Wikidata</a></li><li><a href="/wiki/Category:Use_dmy_dates_from_March_2024" title="Category:Use dmy dates from March 2024">Use dmy dates from March 2024</a></li><li><a href="/wiki/Category:Commons_category_link_is_on_Wikidata" title="Category:Commons category link is on Wikidata">Commons category link is on Wikidata</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 26 January 2025, at 12:44<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. By using this site, you agree to the <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use" class="extiw" title="foundation:Special:MyLanguage/Policy:Terms of Use">Terms of Use</a> and <a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy" class="extiw" title="foundation:Special:MyLanguage/Policy:Privacy policy">Privacy Policy</a>. Wikipedia® is a registered trademark of the <a rel="nofollow" class="external text" href="https://wikimediafoundation.org/">Wikimedia Foundation, Inc.</a>, a non-profit organization.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy">Privacy policy</a></li> <li id="footer-places-about"><a href="/wiki/Wikipedia:About">About Wikipedia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikipedia:General_disclaimer">Disclaimers</a></li> <li id="footer-places-contact"><a href="//en.wikipedia.org/wiki/Wikipedia:Contact_us">Contact Wikipedia</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Code of Conduct</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Developers</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/en.wikipedia.org">Statistics</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Cookie statement</a></li> <li id="footer-places-mobileview"><a href="//en.m.wikipedia.org/w/index.php?title=V8_(JavaScript_engine)&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Mobile view</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" lang="en" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-header-container vector-sticky-header-container"> <div id="vector-sticky-header" class="vector-sticky-header"> <div class="vector-sticky-header-start"> <div class="vector-sticky-header-icon-start vector-button-flush-left vector-button-flush-right" aria-hidden="true"> <button class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-sticky-header-search-toggle" tabindex="-1" data-event-name="ui.vector-sticky-search-form.icon"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Search</span> </button> </div> <div role="search" class="vector-search-box-vue vector-search-box-show-thumbnail vector-search-box"> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail"> <form action="/w/index.php" id="vector-sticky-search-form" class="cdx-search-input cdx-search-input--has-end-button"> <div class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Search Wikipedia"> <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Special:Search"> </div> <button class="cdx-button cdx-search-input__end-button">Search</button> </form> </div> </div> </div> <div class="vector-sticky-header-context-bar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-sticky-header-toc" class="vector-dropdown mw-portlet mw-portlet-sticky-header-toc vector-sticky-header-toc vector-button-flush-left" > <input type="checkbox" id="vector-sticky-header-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-sticky-header-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-sticky-header-toc-label" for="vector-sticky-header-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-sticky-header-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div class="vector-sticky-header-context-bar-primary" aria-hidden="true" ><span class="mw-page-title-main">V8 (JavaScript engine)</span></div> </div> </div> <div class="vector-sticky-header-end" aria-hidden="true"> <div class="vector-sticky-header-icons"> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-talk-sticky-header" tabindex="-1" data-event-name="talk-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbles mw-ui-icon-wikimedia-speechBubbles"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-subject-sticky-header" tabindex="-1" data-event-name="subject-sticky-header"><span class="vector-icon mw-ui-icon-article mw-ui-icon-wikimedia-article"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-history-sticky-header" tabindex="-1" data-event-name="history-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-history mw-ui-icon-wikimedia-wikimedia-history"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-watchlink" id="ca-watchstar-sticky-header" tabindex="-1" data-event-name="watch-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-star mw-ui-icon-wikimedia-wikimedia-star"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-edit-sticky-header" tabindex="-1" data-event-name="wikitext-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-wikiText mw-ui-icon-wikimedia-wikimedia-wikiText"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-ve-edit-sticky-header" tabindex="-1" data-event-name="ve-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-edit mw-ui-icon-wikimedia-wikimedia-edit"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-viewsource-sticky-header" tabindex="-1" data-event-name="ve-edit-protected-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-editLock mw-ui-icon-wikimedia-wikimedia-editLock"></span> <span></span> </a> </div> <div class="vector-sticky-header-buttons"> <button class="cdx-button cdx-button--weight-quiet mw-interlanguage-selector" id="p-lang-btn-sticky-header" tabindex="-1" data-event-name="ui.dropdown-p-lang-btn-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-language mw-ui-icon-wikimedia-wikimedia-language"></span> <span>30 languages</span> </button> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive" id="ca-addsection-sticky-header" tabindex="-1" data-event-name="addsection-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbleAdd-progressive mw-ui-icon-wikimedia-speechBubbleAdd-progressive"></span> <span>Add topic</span> </a> </div> <div class="vector-sticky-header-icon-end"> <div class="vector-user-links"> </div> </div> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-8b4d7cbfc-9cl5k","wgBackendResponseTime":129,"wgPageParseReport":{"limitreport":{"cputime":"1.149","walltime":"1.297","ppvisitednodes":{"value":2918,"limit":1000000},"postexpandincludesize":{"value":106031,"limit":2097152},"templateargumentsize":{"value":4585,"limit":2097152},"expansiondepth":{"value":21,"limit":100},"expensivefunctioncount":{"value":6,"limit":500},"unstrip-depth":{"value":1,"limit":20},"unstrip-size":{"value":121054,"limit":5000000},"entityaccesscount":{"value":1,"limit":400},"timingprofile":["100.00% 1207.028 1 -total"," 73.85% 891.349 2 Template:Infobox"," 66.81% 806.465 1 Template:Infobox_software"," 56.38% 680.517 5 Template:Wikidata"," 46.53% 561.672 1 Template:Infobox_software/simple"," 11.05% 133.361 1 Template:Reflist"," 9.24% 111.541 5 Template:Navbox"," 8.42% 101.648 1 Template:ECMAScript"," 7.86% 94.834 25 Template:Cite_web"," 7.80% 94.130 2 Template:Start_date_and_age"]},"scribunto":{"limitreport-timeusage":{"value":"0.924","limit":"10.000"},"limitreport-memusage":{"value":29315583,"limit":52428800}},"cachereport":{"origin":"mw-web.codfw.main-9664bf54d-prmvr","timestamp":"20250210164333","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"V8 (JavaScript engine)","url":"https:\/\/en.wikipedia.org\/wiki\/V8_(JavaScript_engine)","sameAs":"http:\/\/www.wikidata.org\/entity\/Q574992","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q574992","author":{"@type":"Organization","name":"Contributors to Wikimedia projects"},"publisher":{"@type":"Organization","name":"Wikimedia Foundation, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2008-09-02T05:55:31Z","dateModified":"2025-01-26T12:44:41Z","headline":"open-source JavaScript engine developed by Google"}</script> </body> </html>