This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The unregister
method of the ServiceWorkerRegistration
interface unregisters the service worker registration and returns a Promise
. The promise will resolve to false
if no registration was found, otherwise it resolves to true
irrespective of whether unregistration happened or not (it may not unregister if someone else just called ServiceWorkerContainer.register
with the same scope.) The service worker will finish any ongoing operations before it is unregistered.
Note: This feature is available in Web Workers.
ServiceWorkerRegistration.unregister().then(function(boolean) { });
None.
Promise resolves with a boolean indicating whether the service worker has unregistered or not.
The following simple example registers a service worker example, but then immediately unregisters it again:
if ('serviceWorker' in navigator) { navigator.serviceWorker.register('/sw-test/sw.js', {scope: 'sw-test'}).then(function(registration) { // registration worked console.log('Registration succeeded.'); registration.unregister().then(function(boolean) { // if boolean = true, unregister is successful }); }).catch(function(error) { // registration failed console.log('Registration failed with ' + error); }); };
Specification | Status | Comment |
---|---|---|
Service Workers The definition of 'ServiceWorkerRegistration.unregister()' in that specification. | Editor's Draft | Initial definition. |
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|---|
Basic support | 40.0 | (Yes)[2] | 44.0 (44.0)[1] | No support | ? | No support |
Available in web workers | (Yes) | ? | 44.0 (44.0)[1] | No support | ? | No support |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support | No support | No support | 44.0 (44.0) | (Yes) | No support | ? | No support | 40.0 |
Available in web workers | No support | No support | (Yes) | ? | No support | ? | No support | (Yes) |
[1] Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)
[2] Service workers is available in Microsoft Edge starting EdgeHTML 16 behind a flag.
Promise
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/unregister