This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The matchAll() method of the Clients interface returns a Promise for a list of service worker clients. Include the options parameter to return all service worker clients whose origin is the same as the associated service worker's origin. If options are not included, the method returns only the service worker clients controlled by the service worker. 


ServiceWorkerClients.matchAll(options).then(function(clients) {
  // do something with your clients list


options Optional
An options object allowing you to set options for the matching operation. Available options are:
  • includeUncontrolled: A Boolean — if set to true, the matching operation will return all service worker clients who share the same origin as the current service worker. Otherwise, it returns only the service worker clients controlled by the current service worker. The default is false.
  • type: Sets the type of clients you want matched. Available values are window, worker, sharedworker, and all. The default is all.


Promise that resolves to an array of Client objects. In Chrome 46 and later, this method returns clients in most recently used order.


clients.matchAll(options).then(function(clientList) {
  for(var i = 0 ; i < clients.length ; i++) {
    if(clientList[i].url === 'index.html') {
      // or do something else involving the matching client


Specification Status Comment
Service Workers
The definition of 'Clients' in that specification.
Working Draft Initial definition

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 40.0[1] 44.0 (44.0)[2][3] No support ? No support
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 40.0[1] 44.0 (44.0) (Yes) No support ? No support 40.0
  • [1] The includeUncontrolled option is not supported before Chrome 43.0.
  • [2] The includeUncontrolled option is not supported before Firefox 45.0 (45.0).
  • [3] Service workers (and Push) have been disabled in the Firefox 45 Extended Support Release (ESR.)


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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Clients Experimental Expérimental Method Reference Service Workers ServiceWorker