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Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/appName"><code>appName</code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/appVersion"><code>appVersion</code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/connection"><code>connection</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/deviceMemory"><code>deviceMemory</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/globalPrivacyControl"><code>globalPrivacyControl</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr><abbr class="icon icon-nonstandard" title="Non-standard. Check cross-browser support before using."> <span class="visually-hidden">Non-standard</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/gpu"><code>gpu</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/hardwareConcurrency"><code>hardwareConcurrency</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/hid"><code>hid</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/language"><code>language</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/languages"><code>languages</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/locks"><code>locks</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/mediaCapabilities"><code>mediaCapabilities</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/onLine"><code>onLine</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/permissions"><code>permissions</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/platform"><code>platform</code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/product"><code>product</code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/serial"><code>serial</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><em><code>serviceWorker</code> </em></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/storage"><code>storage</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/usb"><code>usb</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/userAgent"><code>userAgent</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/userAgentData"><code>userAgentData</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li></ol></details></li><li class="toggle"><details open=""><summary>Instance methods</summary><ol><li><a href="/en-US/docs/Web/API/WorkerNavigator/clearAppBadge"><code>clearAppBadge()</code></a></li><li><a href="/en-US/docs/Web/API/WorkerNavigator/setAppBadge"><code>setAppBadge()</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>Related pages for Service Workers API</summary><ol><li><a href="/en-US/docs/Web/API/Cache"><code>Cache</code></a></li><li><a href="/en-US/docs/Web/API/CacheStorage"><code>CacheStorage</code></a></li><li><a href="/en-US/docs/Web/API/Client"><code>Client</code></a></li><li><a href="/en-US/docs/Web/API/Clients"><code>Clients</code></a></li><li><a href="/en-US/docs/Web/API/ExtendableEvent"><code>ExtendableEvent</code></a></li><li><a href="/en-US/docs/Web/API/ExtendableMessageEvent"><code>ExtendableMessageEvent</code></a></li><li><a href="/en-US/docs/Web/API/FetchEvent"><code>FetchEvent</code></a></li><li><a href="/en-US/docs/Web/API/InstallEvent"><code>InstallEvent</code></a></li><li><a href="/en-US/docs/Web/API/NavigationPreloadManager"><code>NavigationPreloadManager</code></a></li><li><a href="/en-US/docs/Web/API/Navigator/serviceWorker"><code>Navigator.serviceWorker</code></a></li><li><a href="/en-US/docs/Web/API/ServiceWorker"><code>ServiceWorker</code></a></li><li><a href="/en-US/docs/Web/API/ServiceWorkerContainer"><code>ServiceWorkerContainer</code></a></li><li><a href="/en-US/docs/Web/API/ServiceWorkerGlobalScope"><code>ServiceWorkerGlobalScope</code></a></li><li><a href="/en-US/docs/Web/API/ServiceWorkerRegistration"><code>ServiceWorkerRegistration</code></a></li><li><a href="/en-US/docs/Web/API/Window/caches"><code>Window.caches</code></a></li><li><a href="/en-US/docs/Web/API/WindowClient"><code>WindowClient</code></a></li><li><a href="/en-US/docs/Web/API/WorkerGlobalScope/caches"><code>WorkerGlobalScope.caches</code></a></li></ol></details></li></ol></div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">In this article</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#value">Value</a></li><li class="document-toc-item "><a class="document-toc-link" href="#examples">Examples</a></li><li class="document-toc-item "><a class="document-toc-link" href="#specifications">Specifications</a></li><li class="document-toc-item "><a class="document-toc-link" href="#browser_compatibility">Browser compatibility</a></li><li class="document-toc-item "><a class="document-toc-link" href="#see_also">See also</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="en-US"><header><h1>WorkerNavigator: serviceWorker property</h1></header><div class="section-content"><div class="notecard secure"><p><strong>Secure context:</strong> This feature is available only in <a href="/en-US/docs/Web/Security/Secure_Contexts">secure contexts</a> (HTTPS), in some or all <a href="#browser_compatibility">supporting browsers</a>.</p></div><div class="notecard note"> <p><strong>Note:</strong> This feature is only available in <a href="/en-US/docs/Web/API/Web_Workers_API">Web Workers</a>.</p> </div> <p>The <strong><code>serviceWorker</code></strong> read-only property of the <a href="/en-US/docs/Web/API/WorkerNavigator"><code>WorkerNavigator</code></a> interface returns the <a href="/en-US/docs/Web/API/ServiceWorkerContainer"><code>ServiceWorkerContainer</code></a> object for the <a href="https://html.spec.whatwg.org/multipage/browsers.html#concept-document-window" class="external" target="_blank">associated document</a>, which provides access to registration, removal, upgrade, and communication with the <a href="/en-US/docs/Web/API/ServiceWorker"><code>ServiceWorker</code></a>.</p> <p>The feature may not be available in private mode.</p></div><section aria-labelledby="value"><h2 id="value"><a href="#value">Value</a></h2><div class="section-content"><p><a href="/en-US/docs/Web/API/ServiceWorkerContainer"><code>ServiceWorkerContainer</code></a>.</p></div></section><section aria-labelledby="examples"><h2 id="examples"><a href="#examples">Examples</a></h2><div class="section-content"><p>This code checks if the browser supports using service worker in workers.</p> <div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>if ("serviceWorker" in navigator) { // Supported! 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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/docs/Web/API/WorkerNavigator/serviceWorker","doc":{"isMarkdown":true,"isTranslated":false,"isActive":true,"flaws":{},"title":"WorkerNavigator: serviceWorker property","mdn_url":"/en-US/docs/Web/API/WorkerNavigator/serviceWorker","locale":"en-US","native":"English (US)","browserCompat":["api.WorkerNavigator.serviceWorker"],"sidebarHTML":"<ol><li class=\"section\"><a href=\"/en-US/docs/Web/API/Service_Worker_API\">Service Worker API</a></li><li class=\"section\"><a href=\"/en-US/docs/Web/API/WorkerNavigator\"><code>WorkerNavigator</code></a></li><li class=\"toggle\"><details open=\"\"><summary>Instance properties</summary><ol><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/appCodeName\"><code>appCodeName</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/appName\"><code>appName</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/appVersion\"><code>appVersion</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/connection\"><code>connection</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/deviceMemory\"><code>deviceMemory</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/globalPrivacyControl\"><code>globalPrivacyControl</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr><abbr class=\"icon icon-nonstandard\" title=\"Non-standard. Check cross-browser support before using.\">\n <span class=\"visually-hidden\">Non-standard</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/gpu\"><code>gpu</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/hardwareConcurrency\"><code>hardwareConcurrency</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/hid\"><code>hid</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/language\"><code>language</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/languages\"><code>languages</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/locks\"><code>locks</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/mediaCapabilities\"><code>mediaCapabilities</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/onLine\"><code>onLine</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/permissions\"><code>permissions</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/platform\"><code>platform</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/product\"><code>product</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/serial\"><code>serial</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><em><code>serviceWorker</code> </em></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/storage\"><code>storage</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/usb\"><code>usb</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/userAgent\"><code>userAgent</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/userAgentData\"><code>userAgentData</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>Instance methods</summary><ol><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/clearAppBadge\"><code>clearAppBadge()</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerNavigator/setAppBadge\"><code>setAppBadge()</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>Related pages for Service Workers API</summary><ol><li><a href=\"/en-US/docs/Web/API/Cache\"><code>Cache</code></a></li><li><a href=\"/en-US/docs/Web/API/CacheStorage\"><code>CacheStorage</code></a></li><li><a href=\"/en-US/docs/Web/API/Client\"><code>Client</code></a></li><li><a href=\"/en-US/docs/Web/API/Clients\"><code>Clients</code></a></li><li><a href=\"/en-US/docs/Web/API/ExtendableEvent\"><code>ExtendableEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/ExtendableMessageEvent\"><code>ExtendableMessageEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/FetchEvent\"><code>FetchEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/InstallEvent\"><code>InstallEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/NavigationPreloadManager\"><code>NavigationPreloadManager</code></a></li><li><a href=\"/en-US/docs/Web/API/Navigator/serviceWorker\"><code>Navigator.serviceWorker</code></a></li><li><a href=\"/en-US/docs/Web/API/ServiceWorker\"><code>ServiceWorker</code></a></li><li><a href=\"/en-US/docs/Web/API/ServiceWorkerContainer\"><code>ServiceWorkerContainer</code></a></li><li><a href=\"/en-US/docs/Web/API/ServiceWorkerGlobalScope\"><code>ServiceWorkerGlobalScope</code></a></li><li><a href=\"/en-US/docs/Web/API/ServiceWorkerRegistration\"><code>ServiceWorkerRegistration</code></a></li><li><a href=\"/en-US/docs/Web/API/Window/caches\"><code>Window.caches</code></a></li><li><a href=\"/en-US/docs/Web/API/WindowClient\"><code>WindowClient</code></a></li><li><a href=\"/en-US/docs/Web/API/WorkerGlobalScope/caches\"><code>WorkerGlobalScope.caches</code></a></li></ol></details></li></ol>","sidebarMacro":"APIRef","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<div class=\"notecard secure\"><p><strong>Secure context:</strong> This feature is available only in <a href=\"/en-US/docs/Web/Security/Secure_Contexts\">secure contexts</a> (HTTPS), in some or all <a href=\"#browser_compatibility\">supporting browsers</a>.</p></div><div class=\"notecard note\">\n <p><strong>Note:</strong> This feature is only available in <a href=\"/en-US/docs/Web/API/Web_Workers_API\">Web Workers</a>.</p>\n</div>\n<p>The <strong><code>serviceWorker</code></strong> read-only property of the <a href=\"/en-US/docs/Web/API/WorkerNavigator\"><code>WorkerNavigator</code></a> interface returns the <a href=\"/en-US/docs/Web/API/ServiceWorkerContainer\"><code>ServiceWorkerContainer</code></a> object for the <a href=\"https://html.spec.whatwg.org/multipage/browsers.html#concept-document-window\" class=\"external\" target=\"_blank\">associated document</a>, which provides access to registration, removal, upgrade, and communication with the <a href=\"/en-US/docs/Web/API/ServiceWorker\"><code>ServiceWorker</code></a>.</p>\n<p>The feature may not be available in private mode.</p>"}},{"type":"prose","value":{"id":"value","title":"Value","isH3":false,"content":"<p><a href=\"/en-US/docs/Web/API/ServiceWorkerContainer\"><code>ServiceWorkerContainer</code></a>.</p>"}},{"type":"prose","value":{"id":"examples","title":"Examples","isH3":false,"content":"<p>This code checks if the browser supports using service worker in workers.</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>if (\"serviceWorker\" in navigator) {\n // Supported!\n}\n</code></pre></div>"}},{"type":"specifications","value":{"title":"Specifications","id":"specifications","isH3":false,"specifications":[{"bcdSpecificationURL":"https://w3c.github.io/ServiceWorker/#navigator-serviceworker","title":"Service Workers"}],"query":"api.WorkerNavigator.serviceWorker"}},{"type":"browser_compatibility","value":{"title":"Browser compatibility","id":"browser_compatibility","isH3":false,"query":"api.WorkerNavigator.serviceWorker"}},{"type":"prose","value":{"id":"see_also","title":"See also","isH3":false,"content":"<ul>\n <li><a href=\"/en-US/docs/Web/API/Service_Worker_API\">Service Worker API</a></li>\n <li><a href=\"/en-US/docs/Web/API/Service_Worker_API/Using_Service_Workers\">Using Service Workers</a></li>\n</ul>"}}],"toc":[{"text":"Value","id":"value"},{"text":"Examples","id":"examples"},{"text":"Specifications","id":"specifications"},{"text":"Browser compatibility","id":"browser_compatibility"},{"text":"See also","id":"see_also"}],"summary":"The serviceWorker read-only property of the WorkerNavigator interface returns the ServiceWorkerContainer object for the associated document, which provides access to registration, removal, upgrade, and communication with the ServiceWorker.","popularity":0,"modified":"2024-08-29T00:59:00.000Z","other_translations":[{"locale":"de","title":"WorkerNavigator: serviceWorker-Eigenschaft","native":"Deutsch"},{"locale":"ja","title":"WorkerNavigator: serviceWorker プロパティ","native":"日本語"}],"pageType":"web-api-instance-property","source":{"folder":"en-us/web/api/workernavigator/serviceworker","github_url":"https://github.com/mdn/content/blob/main/files/en-us/web/api/workernavigator/serviceworker/index.md","last_commit_url":"https://github.com/mdn/content/commit/e8fe043f7d2ad7cd9804d1bf96e0310949f1dac7","filename":"index.md"},"short_title":"serviceWorker","parents":[{"uri":"/en-US/docs/Web","title":"References"},{"uri":"/en-US/docs/Web/API","title":"Web APIs"},{"uri":"/en-US/docs/Web/API/WorkerNavigator","title":"WorkerNavigator"},{"uri":"/en-US/docs/Web/API/WorkerNavigator/serviceWorker","title":"serviceWorker"}],"pageTitle":"WorkerNavigator: serviceWorker property - Web APIs | MDN","noIndexing":false}}</script></body></html>