The focus()
method of the WindowClient
interface gives user input focus to the current client and returns a Promise
that resolves to the existing WindowClient
.
Syntax
windowClient.focus().then(function(windowClient) { // do something with your WindowClient once it has been focused });
Parameters
None.
Return value
A Promise
that resolves to the existing WindowClient
.
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) return client.focus(); } if (clients.openWindow) return clients.openWindow('/'); })); });
Specifications
Specification | Status | Comment |
---|---|---|
Service Workers The definition of 'focus()' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
focus | Chrome Full support 42 | Edge Full support ≤18 | Firefox
Full support
44
| IE No support No | Opera ? | Safari No support No | WebView Android No support No | Chrome Android Full support 42 | Firefox Android Full support 44 | Opera Android ? | Safari iOS No support No | Samsung Internet Android Full support 4.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- See implementation notes.
- See implementation notes.