ServiceWorkerRegistration.unregister()
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.
Syntax
serviceWorkerRegistration.unregister().then(function(boolean) { });
Parameters
None.
Return value
Promise
resolves with a boolean indicating whether the service worker has unregistered or not.
Example
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); }); };
Specifications
Specification |
---|
Service Workers 1 # navigator-service-worker-unregister |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
unregister |
40 |
17 |
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No |
27 |
11.1 |
40 |
40 |
44 |
27 |
11.3 |
4.0 |
See also
- Using Service Workers
- Service workers basic code example
- Is ServiceWorker ready?
Promise
- Using web workers
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https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerRegistration/unregister