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+---
+title: ServiceWorker
+slug: Web/API/ServiceWorker
+translation_of: Web/API/ServiceWorker
+---
+<div>{{APIRef("Service Workers API")}}</div>
+
+<p>Die <strong> <code>ServiceWorker-Schnittstelle</code> </strong> der <a href="/en-US/docs/Web/API/Service_Worker_API">Service Worker-API</a> stellt einen Verweis auf einen Serviceworker bereit. Mehrere "Glossary"-Glossar-("Browsing-Kontexte", "Browsing-Kontexte") (z. B. .pages, Arbeitskräfte usw.) können demselben Service-Worker zugeordnet werden, jeder durch ein eindeutiges Objekt.<code>ServiceWorker</code></p>
+
+<p>Ein Objekt ist in der Eigenschaft ""ServiceWorkerRegistration.active"" und in der Eigenschaft ""ServiceWorkerContainer.controller"" verfügbar – dies ist ein Service-Worker, der aktiviert wurde und die Seite steuert (der Service-Worker wurde erfolgreich registriert, und die gesteuerte Seite wurde neu geladen).)<code>ServiceWorker</code></p>
+
+<p>Die Schnittstelle wird eine Reihe von Lebenszyklusereignissen – und – und funktionalen Ereignissen einschließlich ausgelöst. Einem Objekt ist ein Objekt zugeordnet, dem der Lebenszyklus von "ServiceWorker.state") zugeordnet ist.<code>ServiceWorker</code><code>install</code><code>activate</code><code>fetch</code><code>ServiceWorker</code></p>
+
+<h2 id="Properties">Properties</h2>
+
+<p><em>The <code>ServiceWorker</code> interface inherits properties from its parent, {{domxref("Worker")}}.</em></p>
+
+<dl>
+ <dt>{{domxref("ServiceWorker.scriptURL")}} {{readonlyinline}}</dt>
+ <dd>Returns the serialized script URL defined as part of {{domxref("ServiceWorkerRegistration")}}. The URL must be on the same origin as the document that registers the .<code>ServiceWorker</code><code>ServiceWorker</code></dd>
+ <dt>{{domxref("ServiceWorker.state")}} {{readonlyinline}}</dt>
+ <dd>Returns the state of the service worker. It returns one of the following values: , , , or .<code>installing</code><code>installed,</code><code>activating</code><code>activated</code><code>redundant</code></dd>
+</dl>
+
+<h3 id="Event_handlers">Event handlers</h3>
+
+<dl>
+ <dt>{{domxref("ServiceWorker.onstatechange")}} {{readonlyinline}}</dt>
+ <dd>An {{domxref("EventListener")}} property called whenever an event of type is fired; it is basically fired anytime the {{domxref("ServiceWorker.state")}} changes.<code>statechange</code></dd>
+</dl>
+
+<h2 id="Methods">Methods</h2>
+
+<p><em>The <code>ServiceWorker</code> interface inherits methods from its parent, {{domxref("Worker")}}, with the exception of {{domxref("Worker.terminate")}} — this should not be accessible from service workers.</em></p>
+
+<h2 id="Examples">Examples</h2>
+
+<p>This code snippet is from the <a href="https://github.com/GoogleChrome/samples/blob/gh-pages/service-worker/registration-events/index.html">service worker registration-events sample</a> (<a href="https://googlechrome.github.io/samples/service-worker/registration-events/">live demo</a>). The code listens for any change in the {{domxref("ServiceWorker.state")}} and returns its value.</p>
+
+<pre class="brush: js notranslate">if ('serviceWorker' in navigator) {
+    navigator.serviceWorker.register('service-worker.js', {
+        scope: './'
+    }).then(function (registration) {
+        var serviceWorker;
+        if (registration.installing) {
+            serviceWorker = registration.installing;
+            document.querySelector('#kind').textContent = 'installing';
+        } else if (registration.waiting) {
+            serviceWorker = registration.waiting;
+            document.querySelector('#kind').textContent = 'waiting';
+        } else if (registration.active) {
+            serviceWorker = registration.active;
+            document.querySelector('#kind').textContent = 'active';
+        }
+        if (serviceWorker) {
+            // logState(serviceWorker.state);
+            serviceWorker.addEventListener('statechange', function (e) {
+                // logState(e.target.state);
+            });
+        }
+    }).catch (function (error) {
+        // Something went wrong during registration. The service-worker.js file
+        // might be unavailable or contain a syntax error.
+    });
+} else {
+    // The current browser doesn't support service workers.
+}</pre>
+
+<h2 id="Specifications">Specifications</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Specification</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comment</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('Service Workers', '#serviceworker', 'ServiceWorker')}}</td>
+   <td>{{Spec2('Service Workers')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+<div>
+
+
+<p>{{Compat("api.ServiceWorker")}}</p>
+</div>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li><a href="https://serviceworke.rs">ServiceWorker Cookbook</a></li>
+ <li><a href="/en-US/docs/Web/API/ServiceWorker_API/Using_Service_Workers">Using Service Workers</a></li>
+ <li><a href="https://github.com/mdn/sw-test">Service worker basic code example</a></li>
+ <li><a href="https://jakearchibald.github.io/isserviceworkerready/">Is ServiceWorker ready?</a></li>
+ <li>{{jsxref("Promise")}}</li>
+ <li><a href="/en-US/docs/Web/API/Web_Workers_API/Using_web_workers">Using web workers</a></li>
+</ul>