CINXE.COM

<!doctype html><html lang="en-US" prefix="og: https://ogp.me/ns#"><head><meta charSet="utf-8"/><meta name="viewport" content="width=device-width,initial-scale=1"/><link rel="icon" href="https://developer.mozilla.org/favicon-48x48.bc390275e955dacb2e65.png"/><link rel="apple-touch-icon" href="https://developer.mozilla.org/apple-touch-icon.528534bba673c38049c2.png"/><meta name="theme-color" content="#ffffff"/><link rel="manifest" href="https://developer.mozilla.org/manifest.f42880861b394dd4dc9b.json"/><link rel="search" type="application/opensearchdescription+xml" href="/opensearch.xml" title="MDN Web Docs"/><title>MDN Web Docs</title><link rel="preload" as="font" type="font/woff2" href="/static/media/Inter.var.c2fe3cb2b7c746f7966a.woff2" crossorigin=""/><link rel="alternate" type="application/rss+xml" title="MDN Blog RSS Feed" href="https://developer.mozilla.org/en-US/blog/rss.xml" hrefLang="en"/><meta name="description" content="The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps."/><meta property="og:url" content="https://developer.mozilla.org/en-US/"/><meta property="og:title" content="MDN Web Docs"/><meta property="og:type" content="website"/><meta property="og:locale" content="en_US"/><meta property="og:description" content="The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps."/><meta property="og:image" content="https://developer.mozilla.org/mdn-social-share.d893525a4fb5fb1f67a2.png"/><meta property="og:image:type" content="image/png"/><meta property="og:image:height" content="1080"/><meta property="og:image:width" content="1920"/><meta property="og:image:alt" content="The MDN Web Docs logo, featuring a blue accent color, displayed on a solid black background."/><meta property="og:site_name" content="MDN Web Docs"/><meta name="twitter:card" content="summary_large_image"/><meta name="twitter:creator" content="MozDevNet"/><link rel="canonical" href="https://developer.mozilla.org/en-US/"/><style media="print">.article-actions-container,.document-toc-container,.language-menu,.main-menu-toggle,.on-github,.page-footer,.place,.sidebar,.top-banner,.top-navigation-main,ul.prev-next{display:none!important}.main-page-content,.main-page-content pre{padding:2px}.main-page-content pre{border-left-width:2px}</style><script src="/static/js/gtag.js" defer=""></script><script defer="" src="/static/js/main.4e767e67.js"></script><link href="/static/css/main.26c64ea7.css" rel="stylesheet"/></head><body><script>if(document.body.addEventListener("load",(t=>{t.target.classList.contains("interactive")&&t.target.setAttribute("data-readystate","complete")}),{capture:!0}),window&&document.documentElement){const t={light:"#ffffff",dark:"#1b1b1b"};try{const e=window.localStorage.getItem("theme");e&&(document.documentElement.className=e,document.documentElement.style.backgroundColor=t[e]);const o=window.localStorage.getItem("nop");o&&(document.documentElement.dataset.nop=o)}catch(t){console.warn("Unable to read theme from localStorage",t)}}</script><div id="root"><ul id="nav-access" class="a11y-nav"><li><a id="skip-main" href="#content">Skip to main content</a></li><li><a id="skip-search" href="#top-nav-search-input">Skip to search</a></li></ul><div class="page-wrapper category-home standard-page "><div class="top-banner loading"><section class="place top container"></section></div><div class="sticky-header-container without-actions"><header class="top-navigation dark "><div class="container "><div class="top-navigation-wrap"><a href="/en-US/" class="logo" aria-label="MDN homepage"><svg id="mdn-docs-logo" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 361 104.2" style="enable-background:new 0 0 361 104.2" xml:space="preserve" role="img"><title>MDN Web Docs</title><path d="M197.6 73.2h-17.1v-5.5h3.8V51.9c0-3.7-.7-6.3-2.1-7.9-1.4-1.6-3.3-2.3-5.7-2.3-3.2 0-5.6 1.1-7.2 3.4s-2.4 4.6-2.5 6.9v15.6h6v5.5h-17.1v-5.5h3.8V51.9c0-3.8-.7-6.4-2.1-7.9-1.4-1.5-3.3-2.3-5.6-2.3-3.2 0-5.5 1.1-7.2 3.3-1.6 2.2-2.4 4.5-2.5 6.9v15.8h6.9v5.5h-20.2v-5.5h6V42.4h-6.1v-5.6h13.4v6.4c1.2-2.1 2.7-3.8 4.7-5.2 2-1.3 4.4-2 7.3-2s5.3.7 7.5 2.1c2.2 1.4 3.7 3.5 4.5 6.4 1.1-2.5 2.7-4.5 4.9-6.1s4.8-2.4 7.9-2.4c3.5 0 6.5 1.1 8.9 3.3s3.7 5.6 3.7 10.2v18.2h6.1v5.5zm42.5 0h-13.2V66c-1.2 2.2-2.8 4.1-4.9 5.6-2.1 1.6-4.8 2.4-8.3 2.4-4.8 0-8.7-1.6-11.6-4.9-2.9-3.2-4.3-7.7-4.3-13.3 0-5 1.3-9.6 4-13.7 2.6-4.1 6.9-6.2 12.8-6.2s9.8 2.2 12.3 6.5V22.7h-8.6v-5.6h15.8v50.6h6v5.5zm-13.3-16.8V52c-.1-3-1.2-5.5-3.2-7.3s-4.4-2.8-7.2-2.8c-3.6 0-6.3 1.3-8.2 3.9-1.9 2.6-2.8 5.8-2.8 9.6 0 4.1 1 7.3 3 9.5s4.5 3.3 7.4 3.3c3.2 0 5.8-1.3 7.8-3.8 2.1-2.6 3.1-5.3 3.2-8zm61.5 16.8H269v-5.5h6V51.9c0-3.7-.7-6.3-2.2-7.9-1.4-1.6-3.4-2.3-5.7-2.3-3.1 0-5.6 1-7.4 3s-2.8 4.4-2.9 7v15.9h6v5.5h-19.3v-5.5h6V42.4h-6.2v-5.6h13.6V43c2.6-4.6 6.8-6.9 12.7-6.9 3.6 0 6.7 1.1 9.2 3.3s3.7 5.6 3.7 10.2v18.2h6v5.4h-.2z" class="logo-text"></path><path d="M42 .2 13.4 92.3H1.7L30.2.2Zm10.4 0v92.1H42V.2Zm40.3 0L64.2 92.3H52.5L81 .2Zm10.4 0v92.1H92.7V.2Z" class="logo-m"></path><path d="M294 95h67v8.8h-67z" class="logo-_"></path></svg></a><button title="Open main menu" type="button" class="button action has-icon main-menu-toggle" aria-haspopup="menu" aria-label="Open main menu" aria-expanded="false"><span class="button-wrap"><span class="icon icon-menu "></span><span class="visually-hidden">Open main menu</span></span></button></div><div class="top-navigation-main"><nav class="main-nav" aria-label="Main menu"><ul class="main-menu nojs"><li class="top-level-entry-container "><button type="button" id="references-button" class="top-level-entry menu-toggle" aria-controls="references-menu" aria-expanded="false">References</button><a href="/en-US/docs/Web" class="top-level-entry">References</a><ul id="references-menu" class="submenu references hidden inline-submenu-lg" aria-labelledby="references-button"><li class="apis-link-container mobile-only "><a href="/en-US/docs/Web" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Overview / Web Technology</div><p class="submenu-item-description">Web technology reference for developers</p></div></a></li><li class="html-link-container "><a href="/en-US/docs/Web/HTML" class="submenu-item "><div class="submenu-icon html"></div><div class="submenu-content-container"><div class="submenu-item-heading">HTML</div><p class="submenu-item-description">Structure of content on the web</p></div></a></li><li class="css-link-container "><a href="/en-US/docs/Web/CSS" class="submenu-item "><div class="submenu-icon css"></div><div class="submenu-content-container"><div class="submenu-item-heading">CSS</div><p class="submenu-item-description">Code used to describe document style</p></div></a></li><li class="javascript-link-container "><a href="/en-US/docs/Web/JavaScript" class="submenu-item "><div class="submenu-icon javascript"></div><div class="submenu-content-container"><div class="submenu-item-heading">JavaScript</div><p class="submenu-item-description">General-purpose scripting language</p></div></a></li><li class="http-link-container "><a href="/en-US/docs/Web/HTTP" class="submenu-item "><div class="submenu-icon http"></div><div class="submenu-content-container"><div class="submenu-item-heading">HTTP</div><p class="submenu-item-description">Protocol for transmitting web resources</p></div></a></li><li class="apis-link-container "><a href="/en-US/docs/Web/API" class="submenu-item "><div class="submenu-icon apis"></div><div class="submenu-content-container"><div class="submenu-item-heading">Web APIs</div><p class="submenu-item-description">Interfaces for building web applications</p></div></a></li><li class="apis-link-container "><a href="/en-US/docs/Mozilla/Add-ons/WebExtensions" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Web Extensions</div><p class="submenu-item-description">Developing extensions for web browsers</p></div></a></li><li class="apis-link-container desktop-only "><a href="/en-US/docs/Web" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Web Technology</div><p class="submenu-item-description">Web technology reference for developers</p></div></a></li></ul></li><li class="top-level-entry-container "><button type="button" id="guides-button" class="top-level-entry menu-toggle" aria-controls="guides-menu" aria-expanded="false">Guides</button><a href="/en-US/docs/Learn" class="top-level-entry">Guides</a><ul id="guides-menu" class="submenu guides hidden inline-submenu-lg" aria-labelledby="guides-button"><li class="apis-link-container mobile-only "><a href="/en-US/docs/Learn" class="submenu-item "><div class="submenu-icon learn"></div><div class="submenu-content-container"><div class="submenu-item-heading">Overview / MDN Learning Area</div><p class="submenu-item-description">Learn web development</p></div></a></li><li class="apis-link-container desktop-only "><a href="/en-US/docs/Learn" class="submenu-item "><div class="submenu-icon learn"></div><div class="submenu-content-container"><div class="submenu-item-heading">MDN Learning Area</div><p class="submenu-item-description">Learn web development</p></div></a></li><li class="html-link-container "><a href="/en-US/docs/Learn/HTML" class="submenu-item "><div class="submenu-icon html"></div><div class="submenu-content-container"><div class="submenu-item-heading">HTML</div><p class="submenu-item-description">Learn to structure web content with HTML</p></div></a></li><li class="css-link-container "><a href="/en-US/docs/Learn/CSS" class="submenu-item "><div class="submenu-icon css"></div><div class="submenu-content-container"><div class="submenu-item-heading">CSS</div><p class="submenu-item-description">Learn to style content using CSS</p></div></a></li><li class="javascript-link-container "><a href="/en-US/docs/Learn/JavaScript" class="submenu-item "><div class="submenu-icon javascript"></div><div class="submenu-content-container"><div class="submenu-item-heading">JavaScript</div><p class="submenu-item-description">Learn to run scripts in the browser</p></div></a></li><li class=" "><a href="/en-US/docs/Web/Accessibility" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Accessibility</div><p class="submenu-item-description">Learn to make the web accessible to all</p></div></a></li></ul></li><li class="top-level-entry-container "><button type="button" id="mdn-plus-button" class="top-level-entry menu-toggle" aria-controls="mdn-plus-menu" aria-expanded="false">Plus</button><a href="/en-US/plus" class="top-level-entry">Plus</a><ul id="mdn-plus-menu" class="submenu mdn-plus hidden inline-submenu-lg" aria-labelledby="mdn-plus-button"><li class=" "><a href="/en-US/plus" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Overview</div><p class="submenu-item-description">A customized MDN experience</p></div></a></li><li class=" "><a href="/en-US/plus/ai-help" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">AI Help</div><p class="submenu-item-description">Get real-time assistance and support</p></div></a></li><li class=" "><a href="/en-US/plus/updates" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Updates</div><p class="submenu-item-description">All browser compatibility updates at a glance</p></div></a></li><li class=" "><a href="/en-US/plus/docs/features/overview" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Documentation</div><p class="submenu-item-description">Learn how to use MDN Plus</p></div></a></li><li class=" "><a href="/en-US/plus/docs/faq" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">FAQ</div><p class="submenu-item-description">Frequently asked questions about MDN Plus</p></div></a></li></ul></li><li class="top-level-entry-container "><a class="top-level-entry menu-link" href="/en-US/curriculum/">Curriculum <sup class="new">New</sup></a></li><li class="top-level-entry-container "><a class="top-level-entry menu-link" href="/en-US/blog/">Blog</a></li><li class="top-level-entry-container "><button type="button" id="tools-button" class="top-level-entry menu-toggle" aria-controls="tools-menu" aria-expanded="false">Tools</button><ul id="tools-menu" class="submenu tools hidden inline-submenu-lg" aria-labelledby="tools-button"><li class=" "><a href="/en-US/play" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">Playground</div><p class="submenu-item-description">Write, test and share your code</p></div></a></li><li class=" "><a href="/en-US/observatory" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">HTTP Observatory</div><p class="submenu-item-description">Scan a website for free</p></div></a></li><li class=" "><a href="/en-US/plus/ai-help" class="submenu-item "><div class="submenu-icon"></div><div class="submenu-content-container"><div class="submenu-item-heading">AI Help</div><p class="submenu-item-description">Get real-time assistance and support</p></div></a></li></ul></li></ul></nav><div class="header-search"><form action="/en-US/search" class="search-form search-widget" id="top-nav-search-form" role="search"><label id="top-nav-search-label" for="top-nav-search-input" class="visually-hidden">Search MDN</label><input aria-activedescendant="" aria-autocomplete="list" aria-controls="top-nav-search-menu" aria-expanded="false" aria-labelledby="top-nav-search-label" autoComplete="off" id="top-nav-search-input" role="combobox" type="search" class="search-input-field" name="q" placeholder=" " required="" value=""/><button type="button" class="button action has-icon clear-search-button"><span class="button-wrap"><span class="icon icon-cancel "></span><span class="visually-hidden">Clear search input</span></span></button><button type="submit" class="button action has-icon search-button"><span class="button-wrap"><span class="icon icon-search "></span><span class="visually-hidden">Search</span></span></button><div id="top-nav-search-menu" role="listbox" aria-labelledby="top-nav-search-label"></div></form></div><div class="theme-switcher-menu"><button type="button" class="button action has-icon theme-switcher-menu small" aria-haspopup="menu"><span class="button-wrap"><span class="icon icon-theme-os-default "></span>Theme</span></button></div><ul class="auth-container"><li><a href="/users/fxa/login/authenticate/?next=%2Fen-US%2F" class="login-link" rel="nofollow">Log in</a></li><li><a href="/users/fxa/login/authenticate/?next=%2Fen-US%2F" target="_self" rel="nofollow" class="button primary mdn-plus-subscribe-link"><span class="button-wrap">Sign up for free</span></a></li></ul></div></div></header></div><main id="content" role="main"><div class="homepage mdn-ui-body-m"><div class="homepage-hero dark"><section><h1>Resources for <u>Developers</u>,<br/> by Developers</h1><p>Documenting web technologies, including <a href="/en-US/docs/Web/CSS" data-glean="homepage_hero: css">CSS</a>, <a href="/en-US/docs/Web/HTML" data-glean="homepage_hero: html">HTML</a>, and <a href="/en-US/docs/Web/JavaScript" data-glean="homepage_hero: js">JavaScript</a>, since 2005.</p><div class="homepage-hero-search"><form action="/en-US/search" class="search-form search-widget" id="hp-search-form" role="search"><label id="hp-search-label" for="hp-search-input" class="visually-hidden">Search MDN</label><input aria-activedescendant="" aria-autocomplete="list" aria-controls="hp-search-menu" aria-expanded="false" aria-labelledby="hp-search-label" autoComplete="off" id="hp-search-input" role="combobox" type="search" class="search-input-field" name="q" placeholder=" " required="" value=""/><button type="button" class="button action has-icon clear-search-button"><span class="button-wrap"><span class="icon icon-cancel "></span><span class="visually-hidden">Clear search input</span></span></button><button type="submit" class="button action has-icon search-button"><span class="button-wrap"><span class="icon icon-search "></span><span class="visually-hidden">Search</span></span></button><div id="hp-search-menu" role="listbox" aria-labelledby="hp-search-label"></div></form></div></section><div class="mandala-container homepage-hero-bg" aria-hidden="true"><div class="mandala-translate"><div class="mandala-svg-container"><svg width="675" height="675" viewBox="0 0 675 675" fill="none" xmlns="http://www.w3.org/2000/svg" class="mandala"><title>Mandala</title><defs><path d="M337.5,337.5 m-320,0 a320,320 0 1,1 640,0 a320,320 0 1,1 -640,0" id="circle1"></path><path d="M337.5,337.5 m-280,0 a280,280 0 1,1 560,0 a280,280 0 1,1 -560,0" id="circle2"></path><path d="M337.5,337.5 m-240,0 a240,240 0 1,1 480,0 a240,240 0 1,1 -480,0" id="circle3"></path><path d="M337.5,337.5 m-200,0 a200,200 0 1,1 400,0 a200,200 0 1,1 -400,0" id="circle4"></path><path d="M337.5,337.5 m-160,0 a160,160 0 1,1 320,0 a160,160 0 1,1 -320,0" id="circle5"></path></defs><text dy="70" textLength="2010"><textPath textLength="2010" href="#circle1"> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan></textPath></text><text dy="70" textLength="1760"><textPath textLength="1760" href="#circle2"> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan></textPath></text><text dy="70" textLength="1507"><textPath textLength="1507" href="#circle3"><tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} </textPath></text><text dy="70" textLength="1257"><textPath textLength="1257" href="#circle4"> ../../ ../../ ../../ ../../ ../../ ../../ ../../</textPath></text><text dy="70" textLength="1005"><textPath textLength="1005" href="#circle5"><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></></textPath></text></svg></div></div></div></div><section class="place hp-main"></section><div class="featured-articles"><h2>Featured articles</h2><div class="tile-container"><div class="article-tile"><a href="/en-US/blog/" class="tile-tag" data-glean="homepage: article_tag 1">Blog</a><h3 class="tile-title"><a href="/en-US/blog/mdn-scrimba-partnership/" data-glean="homepage: article 1">MDN partners with Scrimba to enhance web development learning</a></h3><p>We have chosen Scrimba as a course partner for the MDN Curriculum. This blog post explores what the partnership means practically, and how we will provide an even better web education experience together.</p></div><div class="article-tile"><a href="/en-US/blog/" class="tile-tag" data-glean="homepage: article_tag 2">Blog</a><h3 class="tile-title"><a href="/en-US/blog/learn-javascript-console-methods/" data-glean="homepage: article 2">Developer essentials: JavaScript console methods</a></h3><p>The JavaScript console is an essential tool for web development. Learn new and fun ways to use the console to display data and debug your code.</p></div><div class="article-tile"><a href="/en-US/blog/" class="tile-tag" data-glean="homepage: article_tag 3">Blog</a><h3 class="tile-title"><a href="/en-US/blog/introduction-to-web-sustainability/" data-glean="homepage: article 3">Introduction to web sustainability</a></h3><p>What can web designers and developers do to build a more sustainable web? This post explores the environmental impacts of web technologies and looks at some of the ways we can build greener websites.</p></div><div class="article-tile"><a href="/en-US/docs/Web/API" class="tile-tag" data-glean="homepage: article_tag 4">Web APIs</a><h3 class="tile-title"><a href="/en-US/docs/Web/API/CSS_Custom_Highlight_API" data-glean="homepage: article 4">CSS Custom Highlight API</a></h3><p>The CSS Custom Highlight API provides a mechanism for styling arbitrary text ranges on a document by using JavaScript to create the ranges, and CSS to style them.</p></div></div></div><section class="latest-news"><h2>Latest news</h2><ul class="news-list"><li class="news-item"><p class="news-title"><span><a href="/en-US/blog/mdn-scrimba-partnership/" data-glean="homepage: news 1">MDN partners with Scrimba to enhance web development learning</a></span><span><a class="news-source" href="/en-US/blog/" data-glean="homepage: news_source 1">developer.mozilla.org</a></span></p><span class="news-date">4 months ago</span></li><li class="news-item"><p class="news-title"><span><a href="/en-US/blog/mdn-http-observatory-launch/" data-glean="homepage: news 2">Introducing the MDN HTTP Observatory</a></span><span><a class="news-source" href="/en-US/blog/" data-glean="homepage: news_source 2">developer.mozilla.org</a></span></p><span class="news-date">5 months ago</span></li><li class="news-item"><p class="news-title"><span><a href="/en-US/blog/mdn-curriculum-launch/" data-glean="homepage: news 3">Lift-off: The MDN Curriculum launch</a></span><span><a class="news-source" href="/en-US/blog/" data-glean="homepage: news_source 3">developer.mozilla.org</a></span></p><span class="news-date">9 months ago</span></li></ul></section><section class="recent-contributions"><h2>Recent contributions</h2><ul class="contribution-list"><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/content/pull/36930" data-glean="homepage: contribution 1">Link to specific referenced subsection instead of containing article</a><span><a class="request-repo" href="https://github.com/mdn/content" data-glean="homepage: contribution_repo 1">mdn/content</a></span></p><span class="request-date">3 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/content/pull/36631" data-glean="homepage: contribution 2">Add exception info for `HTMLCanvasElement.transferControlToOffscreen()` and `OffscreenCanvas.transferToImageBitmap()`</a><span><a class="request-repo" href="https://github.com/mdn/content" data-glean="homepage: contribution_repo 2">mdn/content</a></span></p><span class="request-date">3 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/content/pull/36902" data-glean="homepage: contribution 3">Document the new options available on the DocumentPictureInPicture.requestWindow() method</a><span><a class="request-repo" href="https://github.com/mdn/content" data-glean="homepage: contribution_repo 3">mdn/content</a></span></p><span class="request-date">5 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/translated-content/pull/24406" data-glean="homepage: contribution 4">[ru]: update Web/HTML/Element/style translation</a><span><a class="request-repo" href="https://github.com/mdn/translated-content" data-glean="homepage: contribution_repo 4">mdn/translated-content</a></span></p><span class="request-date">5 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/content/pull/36929" data-glean="homepage: contribution 5">Light edit for FCP page</a><span><a class="request-repo" href="https://github.com/mdn/content" data-glean="homepage: contribution_repo 5">mdn/content</a></span></p><span class="request-date">5 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/translated-content/pull/24271" data-glean="homepage: contribution 6">[ru]: update Web/HTML/Element/base translation</a><span><a class="request-repo" href="https://github.com/mdn/translated-content" data-glean="homepage: contribution_repo 6">mdn/translated-content</a></span></p><span class="request-date">5 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/translated-content/pull/24457" data-glean="homepage: contribution 7">remove deprecated CSSAnimatedProperties macro</a><span><a class="request-repo" href="https://github.com/mdn/translated-content" data-glean="homepage: contribution_repo 7">mdn/translated-content</a></span></p><span class="request-date">6 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/content/pull/36801" data-glean="homepage: contribution 8">FF133 Navigation Timing API omits test fragments in URL</a><span><a class="request-repo" href="https://github.com/mdn/content" data-glean="homepage: contribution_repo 8">mdn/content</a></span></p><span class="request-date">6 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/translated-content/pull/24623" data-glean="homepage: contribution 9">zh-cn: update the translation of "control flow and error handling"</a><span><a class="request-repo" href="https://github.com/mdn/translated-content" data-glean="homepage: contribution_repo 9">mdn/translated-content</a></span></p><span class="request-date">16 hours ago</span></li><li class="request-item"><p class="request-title"><a href="https://github.com/mdn/translated-content/pull/24640" data-glean="homepage: contribution 10">[zh-cn]: update the translation of `TypedArray.prototype.byteOffset` property</a><span><a class="request-repo" href="https://github.com/mdn/translated-content" data-glean="homepage: contribution_repo 10">mdn/translated-content</a></span></p><span class="request-date">18 hours ago</span></li></ul></section><div class="contributor-spotlight dark"><div class="wrapper"><div class="text-col"><h3>Contributor Spotlight</h3><a class="contributor-name" href="/en-US/community/spotlight/hochan-lee">HoChan Lee</a><blockquote><span class="icon icon-quote "></span>MDN is a large, open community where everyone is welcome. It offers a great opportunity to organize thoughts through writing, while sharing and expanding knowledge by engaging with a diverse group of people throughout the contribution process.</blockquote><a href="/en-US/community" class="spotlight-cta">Get involved →</a></div><figure class="contributor-graphic"><img loading="lazy" width="512" height="323" src="/static/media/mdn_contributor.14a24dcfda486f000754.png" alt="Tiled Mozilla Logo"/></figure></div><div class="mandala-container " aria-hidden="true"><div class="mandala-translate"><div class="mandala-svg-container"><svg width="675" height="675" viewBox="0 0 675 675" fill="none" xmlns="http://www.w3.org/2000/svg" class="mandala"><title>Mandala</title><defs><path d="M337.5,337.5 m-320,0 a320,320 0 1,1 640,0 a320,320 0 1,1 -640,0" id="circle1"></path><path d="M337.5,337.5 m-280,0 a280,280 0 1,1 560,0 a280,280 0 1,1 -560,0" id="circle2"></path><path d="M337.5,337.5 m-240,0 a240,240 0 1,1 480,0 a240,240 0 1,1 -480,0" id="circle3"></path><path d="M337.5,337.5 m-200,0 a200,200 0 1,1 400,0 a200,200 0 1,1 -400,0" id="circle4"></path><path d="M337.5,337.5 m-160,0 a160,160 0 1,1 320,0 a160,160 0 1,1 -320,0" id="circle5"></path></defs><text dy="70" textLength="2010"><textPath textLength="2010" href="#circle1"> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan> /<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan>/<tspan>/</tspan></textPath></text><text dy="70" textLength="1760"><textPath textLength="1760" href="#circle2"> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan> +<tspan>+</tspan>+<tspan>+</tspan>+<tspan>+</tspan></textPath></text><text dy="70" textLength="1507"><textPath textLength="1507" href="#circle3"><tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} <tspan>{</tspan>{<tspan>{</tspan>{ <tspan>}</tspan>}<tspan>}</tspan>} </textPath></text><text dy="70" textLength="1257"><textPath textLength="1257" href="#circle4"> ../../ ../../ ../../ ../../ ../../ ../../ ../../</textPath></text><text dy="70" textLength="1005"><textPath textLength="1005" href="#circle5"><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></><tspan><></tspan></></textPath></text></svg></div></div></div></div><section class="place hp-main"></section></div></main></div><footer id="nav-footer" class="page-footer"><div class="page-footer-grid"><div class="page-footer-logo-col"><a href="/" class="mdn-footer-logo" aria-label="MDN homepage"><svg width="48" height="17" viewBox="0 0 48 17" fill="none" xmlns="http://www.w3.org/2000/svg"><title id="mdn-footer-logo-svg">MDN logo</title><path d="M20.04 16.512H15.504V10.416C15.504 9.488 15.344 8.824 15.024 8.424C14.72 8.024 14.264 7.824 13.656 7.824C12.92 7.824 12.384 8.064 12.048 8.544C11.728 9.024 11.568 9.64 11.568 10.392V14.184H13.008V16.512H8.472V10.416C8.472 9.488 8.312 8.824 7.992 8.424C7.688 8.024 7.232 7.824 6.624 7.824C5.872 7.824 5.336 8.064 5.016 8.544C4.696 9.024 4.536 9.64 4.536 10.392V14.184H6.6V16.512H0V14.184H1.44V8.04H0.024V5.688H4.536V7.32C5.224 6.088 6.32 5.472 7.824 5.472C8.608 5.472 9.328 5.664 9.984 6.048C10.64 6.432 11.096 7.016 11.352 7.8C11.992 6.248 13.168 5.472 14.88 5.472C15.856 5.472 16.72 5.776 17.472 6.384C18.224 6.992 18.6 7.936 18.6 9.216V14.184H20.04V16.512Z" fill="currentColor"></path><path d="M33.6714 16.512H29.1354V14.496C28.8314 15.12 28.3834 15.656 27.7914 16.104C27.1994 16.536 26.4154 16.752 25.4394 16.752C24.0154 16.752 22.8954 16.264 22.0794 15.288C21.2634 14.312 20.8554 12.984 20.8554 11.304C20.8554 9.688 21.2554 8.312 22.0554 7.176C22.8554 6.04 24.0634 5.472 25.6794 5.472C26.5594 5.472 27.2794 5.648 27.8394 6C28.3994 6.352 28.8314 6.8 29.1354 7.344V2.352H26.9754V0H32.2314V14.184H33.6714V16.512ZM29.1354 11.04V10.776C29.1354 9.88 28.8954 9.184 28.4154 8.688C27.9514 8.176 27.3674 7.92 26.6634 7.92C25.9754 7.92 25.3674 8.176 24.8394 8.688C24.3274 9.2 24.0714 10.008 24.0714 11.112C24.0714 12.152 24.3114 12.944 24.7914 13.488C25.2714 14.032 25.8394 14.304 26.4954 14.304C27.3114 14.304 27.9514 13.96 28.4154 13.272C28.8954 12.584 29.1354 11.84 29.1354 11.04Z" fill="currentColor"></path><path d="M47.9589 16.512H41.9829V14.184H43.4229V10.416C43.4229 9.488 43.2629 8.824 42.9429 8.424C42.6389 8.024 42.1829 7.824 41.5749 7.824C40.8389 7.824 40.2709 8.056 39.8709 8.52C39.4709 8.968 39.2629 9.56 39.2469 10.296V14.184H40.6869V16.512H34.7109V14.184H36.1509V8.04H34.5909V5.688H39.2469V7.344C39.9669 6.096 41.1269 5.472 42.7269 5.472C43.7509 5.472 44.6389 5.776 45.3909 6.384C46.1429 6.992 46.5189 7.936 46.5189 9.216V14.184H47.9589V16.512Z" fill="currentColor"></path></svg></a><p>Your blueprint for a better internet.</p><ul class="social-icons"><li><a href="https://mozilla.social/@mdn" target="_blank" rel="me noopener noreferrer"><span class="icon icon-mastodon"></span><span class="visually-hidden">MDN on Mastodon</span></a></li><li><a href="https://twitter.com/mozdevnet" target="_blank" rel="noopener noreferrer"><span class="icon icon-twitter-x"></span><span class="visually-hidden">MDN on X (formerly Twitter)</span></a></li><li><a href="https://github.com/mdn/" target="_blank" rel="noopener noreferrer"><span class="icon icon-github-mark-small"></span><span class="visually-hidden">MDN on GitHub</span></a></li><li><a href="/en-US/blog/rss.xml" target="_blank"><span class="icon icon-feed"></span><span class="visually-hidden">MDN Blog RSS Feed</span></a></li></ul></div><div class="page-footer-nav-col-1"><h2 class="footer-nav-heading">MDN</h2><ul class="footer-nav-list"><li class="footer-nav-item"><a href="/en-US/about">About</a></li><li class="footer-nav-item"><a href="/en-US/blog/">Blog</a></li><li class="footer-nav-item"><a href="https://www.mozilla.org/en-US/careers/listings/?team=ProdOps" target="_blank" rel="noopener noreferrer">Careers</a></li><li class="footer-nav-item"><a href="/en-US/advertising">Advertise with us</a></li></ul></div><div class="page-footer-nav-col-2"><h2 class="footer-nav-heading">Support</h2><ul class="footer-nav-list"><li class="footer-nav-item"><a class="footer-nav-link" href="https://support.mozilla.org/products/mdn-plus">Product help</a></li><li class="footer-nav-item"><a class="footer-nav-link" href="/en-US/docs/MDN/Community/Issues">Report an issue</a></li></ul></div><div class="page-footer-nav-col-3"><h2 class="footer-nav-heading">Our communities</h2><ul class="footer-nav-list"><li class="footer-nav-item"><a class="footer-nav-link" href="/en-US/community">MDN Community</a></li><li class="footer-nav-item"><a class="footer-nav-link" href="https://discourse.mozilla.org/c/mdn/236" target="_blank" rel="noopener noreferrer">MDN Forum</a></li><li class="footer-nav-item"><a class="footer-nav-link" href="/discord" target="_blank" rel="noopener noreferrer">MDN Chat</a></li></ul></div><div class="page-footer-nav-col-4"><h2 class="footer-nav-heading">Developers</h2><ul class="footer-nav-list"><li class="footer-nav-item"><a class="footer-nav-link" href="/en-US/docs/Web">Web Technologies</a></li><li class="footer-nav-item"><a class="footer-nav-link" href="/en-US/docs/Learn">Learn Web Development</a></li><li class="footer-nav-item"><a class="footer-nav-link" href="/en-US/plus">MDN Plus</a></li><li class="footer-nav-item"><a href="https://hacks.mozilla.org/" target="_blank" rel="noopener noreferrer">Hacks Blog</a></li></ul></div><div class="page-footer-moz"><a href="https://www.mozilla.org/" class="footer-moz-logo-link" target="_blank" rel="noopener noreferrer"><svg width="112" height="32" fill="none" xmlns="http://www.w3.org/2000/svg"><title id="mozilla-footer-logo-svg">Mozilla logo</title><path d="M41.753 14.218c-2.048 0-3.324 1.522-3.324 4.157 0 2.423 1.119 4.286 3.29 4.286 2.082 0 3.447-1.678 3.447-4.347 0-2.826-1.522-4.096-3.413-4.096Zm54.89 7.044c0 .901.437 1.618 1.645 1.618 1.427 0 2.949-1.024 3.044-3.352-.649-.095-1.365-.185-2.02-.185-1.426-.005-2.668.397-2.668 1.92Z" fill="currentColor"></path><path d="M0 0v32h111.908V0H0Zm32.56 25.426h-5.87v-7.884c0-2.423-.806-3.352-2.39-3.352-1.924 0-2.702 1.365-2.702 3.324v4.868h1.864v3.044h-5.864v-7.884c0-2.423-.806-3.352-2.39-3.352-1.924 0-2.702 1.365-2.702 3.324v4.868h2.669v3.044H6.642v-3.044h1.863v-7.918H6.642V11.42h5.864v2.11c.839-1.489 2.3-2.39 4.252-2.39 2.02 0 3.878.963 4.566 3.01.778-1.862 2.361-3.01 4.566-3.01 2.512 0 4.812 1.522 4.812 4.84v6.402h1.863v3.044h-.005Zm9.036.307c-4.314 0-7.296-2.635-7.296-7.106 0-4.096 2.484-7.481 7.514-7.481s7.481 3.38 7.481 7.29c0 4.472-3.228 7.297-7.699 7.297Zm22.578-.307H51.942l-.403-2.11 7.7-8.846h-4.376l-.621 2.17-2.888-.313.498-4.907h12.294l.313 2.11-7.767 8.852h4.533l.654-2.172 3.167.308-.872 4.908Zm7.99 0h-4.191v-5.03h4.19v5.03Zm0-8.976h-4.191v-5.03h4.19v5.03Zm2.618 8.976 6.054-21.358h3.945l-6.054 21.358h-3.945Zm8.136 0 6.048-21.358h3.945l-6.054 21.358h-3.939Zm21.486.307c-1.863 0-2.887-1.085-3.072-2.792-.805 1.427-2.232 2.792-4.498 2.792-2.02 0-4.314-1.085-4.314-4.006 0-3.447 3.323-4.253 6.518-4.253.778 0 1.584.034 2.3.124v-.465c0-1.427-.034-3.133-2.3-3.133-.84 0-1.488.061-2.143.402l-.453 1.578-3.195-.34.549-3.224c2.45-.996 3.692-1.27 5.992-1.27 3.01 0 5.556 1.55 5.556 4.75v6.083c0 .805.314 1.085.963 1.085.184 0 .375-.034.587-.095l.034 2.11a5.432 5.432 0 0 1-2.524.654Z" fill="currentColor"></path></svg></a><ul class="footer-moz-list"><li class="footer-moz-item"><a href="https://www.mozilla.org/privacy/websites/" class="footer-moz-link" target="_blank" rel="noopener noreferrer">Website Privacy Notice</a></li><li class="footer-moz-item"><a href="https://www.mozilla.org/privacy/websites/#cookies" class="footer-moz-link" target="_blank" rel="noopener noreferrer">Cookies</a></li><li class="footer-moz-item"><a href="https://www.mozilla.org/about/legal/terms/mozilla" class="footer-moz-link" target="_blank" rel="noopener noreferrer">Legal</a></li><li class="footer-moz-item"><a href="https://www.mozilla.org/about/governance/policies/participation/" class="footer-moz-link" target="_blank" rel="noopener noreferrer">Community Participation Guidelines</a></li></ul></div><div class="page-footer-legal"><p id="license" class="page-footer-legal-text">Visit <a href="https://www.mozilla.org" target="_blank" rel="noopener noreferrer">Mozilla Corporation’s</a> not-for-profit parent, the <a target="_blank" rel="noopener noreferrer" href="https://foundation.mozilla.org/">Mozilla Foundation</a>.<br/>Portions of this content are ©1998–2024 by individual mozilla.org contributors. Content available under <a href="/en-US/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/en-US/","hyData":{"recentContributions":{"items":[{"number":36930,"title":"Link to specific referenced subsection instead of containing article","updated_at":"2024-11-22T22:18:41Z","url":"https://github.com/mdn/content/pull/36930","repo":{"name":"mdn/content","url":"https://github.com/mdn/content"}},{"number":36631,"title":"Add exception info for `HTMLCanvasElement.transferControlToOffscreen()` and `OffscreenCanvas.transferToImageBitmap()`","updated_at":"2024-11-22T21:55:15Z","url":"https://github.com/mdn/content/pull/36631","repo":{"name":"mdn/content","url":"https://github.com/mdn/content"}},{"number":36902,"title":"Document the new options available on the DocumentPictureInPicture.requestWindow() method","updated_at":"2024-11-22T20:24:52Z","url":"https://github.com/mdn/content/pull/36902","repo":{"name":"mdn/content","url":"https://github.com/mdn/content"}},{"number":24406,"title":"[ru]: update Web/HTML/Element/style translation","updated_at":"2024-11-22T20:15:37Z","url":"https://github.com/mdn/translated-content/pull/24406","repo":{"name":"mdn/translated-content","url":"https://github.com/mdn/translated-content"}},{"number":36929,"title":"Light edit for FCP page","updated_at":"2024-11-22T20:14:05Z","url":"https://github.com/mdn/content/pull/36929","repo":{"name":"mdn/content","url":"https://github.com/mdn/content"}},{"number":24271,"title":"[ru]: update Web/HTML/Element/base translation","updated_at":"2024-11-22T19:54:22Z","url":"https://github.com/mdn/translated-content/pull/24271","repo":{"name":"mdn/translated-content","url":"https://github.com/mdn/translated-content"}},{"number":24457,"title":"remove deprecated CSSAnimatedProperties macro","updated_at":"2024-11-22T19:24:49Z","url":"https://github.com/mdn/translated-content/pull/24457","repo":{"name":"mdn/translated-content","url":"https://github.com/mdn/translated-content"}},{"number":36801,"title":"FF133 Navigation Timing API omits test fragments in URL","updated_at":"2024-11-22T19:05:26Z","url":"https://github.com/mdn/content/pull/36801","repo":{"name":"mdn/content","url":"https://github.com/mdn/content"}},{"number":24623,"title":"zh-cn: update the translation of \"control flow and error handling\"","updated_at":"2024-11-22T09:41:50Z","url":"https://github.com/mdn/translated-content/pull/24623","repo":{"name":"mdn/translated-content","url":"https://github.com/mdn/translated-content"}},{"number":24640,"title":"[zh-cn]: update the translation of `TypedArray.prototype.byteOffset` property","updated_at":"2024-11-22T07:04:36Z","url":"https://github.com/mdn/translated-content/pull/24640","repo":{"name":"mdn/translated-content","url":"https://github.com/mdn/translated-content"}}]},"featuredContributor":{"contributorName":"HoChan Lee","url":"/en-US/community/spotlight/hochan-lee","quote":"MDN is a large, open community where everyone is welcome. It offers a great opportunity to organize thoughts through writing, while sharing and expanding knowledge by engaging with a diverse group of people throughout the contribution process."},"latestNews":{"items":[{"title":"MDN partners with Scrimba to enhance web development learning","url":"/en-US/blog/mdn-scrimba-partnership/","author":"Hermina Condei","published_at":"Tue Jul 09 2024 00:00:00 GMT+0000 (Coordinated Universal Time)","source":{"name":"developer.mozilla.org","url":"/en-US/blog/"}},{"title":"Introducing the MDN HTTP Observatory","url":"/en-US/blog/mdn-http-observatory-launch/","author":"Hermina Condei","published_at":"Tue Jul 02 2024 00:00:00 GMT+0000 (Coordinated Universal Time)","source":{"name":"developer.mozilla.org","url":"/en-US/blog/"}},{"title":"Lift-off: The MDN Curriculum launch","url":"/en-US/blog/mdn-curriculum-launch/","author":"Hermina Condei","published_at":"Tue Feb 27 2024 00:00:00 GMT+0000 (Coordinated Universal Time)","source":{"name":"developer.mozilla.org","url":"/en-US/blog/"}},{"title":"Baseline's evolution on MDN","url":"/en-US/blog/baseline-evolution-on-mdn/","author":"Vadim Makeev","published_at":"Tue Dec 05 2023 00:00:00 GMT+0000 (Coordinated Universal Time)","source":{"name":"developer.mozilla.org","url":"/en-US/blog/"}}]},"featuredArticles":[{"mdn_url":"/en-US/blog/mdn-scrimba-partnership/","summary":"We have chosen Scrimba as a course partner for the MDN Curriculum. This blog post explores what the partnership means practically, and how we will provide an even better web education experience together.","title":"MDN partners with Scrimba to enhance web development learning","tag":{"uri":"/en-US/blog/","title":"Blog"}},{"mdn_url":"/en-US/blog/learn-javascript-console-methods/","summary":"The JavaScript console is an essential tool for web development. Learn new and fun ways to use the console to display data and debug your code.","title":"Developer essentials: JavaScript console methods","tag":{"uri":"/en-US/blog/","title":"Blog"}},{"mdn_url":"/en-US/blog/introduction-to-web-sustainability/","summary":"What can web designers and developers do to build a more sustainable web? This post explores the environmental impacts of web technologies and looks at some of the ways we can build greener websites.","title":"Introduction to web sustainability","tag":{"uri":"/en-US/blog/","title":"Blog"}},{"mdn_url":"/en-US/docs/Web/API/CSS_Custom_Highlight_API","summary":"The CSS Custom Highlight API provides a mechanism for styling arbitrary text ranges on a document by using JavaScript to create the ranges, and CSS to style them.","title":"CSS Custom Highlight API","tag":{"uri":"/en-US/docs/Web/API","title":"Web APIs"}}]}}</script></body></html>