ServiceWorkerRegistration.unregister()

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.

Syntax

ServiceWorkerRegistration.unregister().then(function(boolean) {
});

Parameters

None.

Returns

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

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support40

161

17

442 No27 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4040 ?4427 No4.0

1. From version 16: this feature is behind the Enable service workers preference.

2. Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR).

See also

Document Tags and Contributors

Contributors to this page: ExE-Boss, abbycar, chrisdavidmills, jpmedley, fscholz, kscarfone
Last updated by: ExE-Boss,