ServiceWorkerGlobalScope.onpush

The ServiceWorkerGlobalScope.onpush event of the ServiceWorkerGlobalScope interface is fired whenever a push message is received by a service worker via a push server.

Syntax

ServiceWorkerGlobalScope.onpush = function(PushEvent) { ... }
self.addEventListener('push', function(PushEvent) { ... })

Example

The following example takes data from a PushEvent and displays it on all of the service worker's clients. The data payload of the push message is available in the event object's data property (PushEvent.data, which contains a PushMessageData object.)

self.addEventListener('push', function(event) {
  if (!(self.Notification && self.Notification.permission === 'granted')) {
    return;
  }

  var data = {};
  if (event.data) {
    data = event.data.json();
  }
  var title = data.title || "Something Has Happened";
  var message = data.message || "Here's something you might want to check out.";
  var icon = "images/new-notification.png";

  var notification = new Notification(title, {
    body: message,
    tag: 'simple-push-demo-notification',
    icon: icon
  });

  notification.addEventListener('click', function() {
    if (clients.openWindow) {
      clients.openWindow('https://example.blog.com/2015/03/04/something-new.html');
    }
  });
});

Specifications

Browser compatibility

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

See also

• Push API