WindowClient.focused

The focused read-only property of the WindowClient interface is a boolean value that indicates whether the current client has focus.

Syntax

var myFocused = windowClient.focused;

Value

A boolean value.

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) {
        if(!client.focused)
          return client.focus();
        }
      }
    }
    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
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

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https://developer.mozilla.org/en-US/docs/Web/API/WindowClient/focused