WindowClient

The WindowClient interface of the ServiceWorker API represents the scope of a service worker client that is a document in a browsing context, controlled by an active worker. The service worker client independently selects and uses a service worker for its own loading and sub-resources.

Methods

WindowClient inherits methods from its parent interface, Client.

WindowClient.focus()

Gives user input focus to the current client.

WindowClient.navigate()

Loads a specified URL into a controlled client page.

Properties

WindowClient inherits properties from its parent interface, Client.

WindowClient.focused Read only

A boolean that indicates whether the current client has focus.

WindowClient.visibilityState Read only

Indicates the visibility of the current client. This value can be one of "hidden", "visible", or "prerender".

Example

self.addEventListener('notificationclick', function(event) {
  console.log('On notification click: ', event.notification.tag);
  event.notification.close();

  // This looks to see if the current is already open and
  // focuses if it is
  event.waitUntil(clients.matchAll({
    type: "window"
  }).then(function(clientList) {
    for (var i = 0; i < clientList.length; i++) {
      var client = clientList[i];
      if (client.url == '/' && 'focus' in client) {
        client.focus();
        break;
      }
    }
    if (clients.openWindow)
      return clients.openWindow('/');
  }));
});

Specifications

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
WindowClient
42
17
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
No
?
11.1
No
42
44
?
11.3
4.0
focus
42
17
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
No
?
11.1
No
42
44
?
11.3
4.0
focused
42
17
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
No
?
11.1
No
42
44
?
11.3
4.0
navigate
49
17
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
No
?
11.1
No
49
44
?
11.3
4.0
visibilityState
42
17
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
No
?
11.1
No
42
44
?
11.3
4.0

See also

© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/WindowClient