This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The subscribe() method of the PushManager interface subscribes to a push service.

It returns a Promise that resolves to a PushSubscription object containing details of a push subscription. A new push subscription is created if the current service worker does not have an existing subscription.

Syntax

​PushManager.subscribe(options).then(function(pushSubscription) { ... } );

Parameters

options Optional
An object containing optional configuration parameters. It can have the following properties:
  • userVisibleOnly: A boolean indicating that the returned push subscription will only be used for messages whose effect is made visible to the user.
  • applicationServerKey: A Base64-encoded DOMString or ArrayBuffer containing an ECDSA P-256 public key that the push server will use to authenticate your application server. If specified, all messages from your application server must use the VAPID authentication scheme, and include a JWT signed with the corresponding private key. This key IS NOT the same ECDH key that you use to encrypt the data. For more information, see "Using VAPID with WebPush".

Note: This parameter is required in some browsers like Chrome and Edge.

Returns

A Promise that resolves to a PushSubscription object.

Example

this.onpush = function(event) {
  console.log(event.data);
  // From here we can write the data to IndexedDB, send it to any open
  // windows, display a notification, etc.
}

navigator.serviceWorker.register('serviceworker.js');

// Use serviceWorker.ready to ensure that you can subscribe for push
navigator.serviceWorker.ready.then(
  function(serviceWorkerRegistration) {
    var options = {
      userVisibleOnly: true,
      applicationServerKey: applicationServerKey
    };
    serviceWorkerRegistration.pushManager.subscribe(options).then(
      function(pushSubscription) {
        console.log(pushSubscription.endpoint);
        // The push subscription details needed by the application
        // server are now available, and can be sent to it using,
        // for example, an XMLHttpRequest.
      }, function(error) {
        // During development it often helps to log errors to the
        // console. In a production environment it might make sense to
        // also report information about errors back to the
        // application server.
        console.log(error);
      }
    );
  });

Specifications

Specification Status Comment
Push API
The definition of 'subscribe()' in that specification.
Working Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome Full support 42
Notes
Full support 42
Notes
Notes The options parameter with a applicationServerKey value is required.
Edge Full support 16
Disabled
Full support 16
Disabled
Disabled From version 16: this feature is behind the Enable service workers preference.
Full support 17
Firefox Full support 44
Notes
Full support 44
Notes
Notes Service workers (and Push) have been disabled in the Firefox 45 and 52 Extended Support Releases (ESR.)
IE No support NoOpera Full support 29Safari No support NoWebView Android No support NoChrome Android Full support 42Edge Mobile Full support YesFirefox Android Full support 48
Notes
Full support 48
Notes
Notes Push enabled by default.
Opera Android Full support 29Safari iOS No support NoSamsung 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.

Document Tags and Contributors

Last updated by: erikadoyle,