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 | Status | Comment |
---|---|---|
Service Workers The definition of 'ServiceWorkerRegistration.unregister()' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
unregister | Chrome Full support 40 | Edge
Full support
17
| Firefox
Full support
44
| IE No support No | Opera Full support 27 | Safari Full support 11.1 | WebView Android Full support 40 | Chrome Android Full support 40 | Firefox Android Full support 44 | Opera Android Full support 27 | Safari iOS Full support 11.3 | Samsung Internet Android Full support 4.0 |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- See implementation notes.
- See implementation notes.
- User must explicitly enable this feature.
- User must explicitly enable this feature.