This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The Client
interface represents an executable context such as a Worker
, or a SharedWorker
. Window
clients are represented by the more-specific WindowClient
. You can get Client
/WindowClient
objects from methods such as Clients.matchAll()
and Clients.get()
.
Methods
Client.postMessage()
- Sends a message to the client.
Properties
Client.id
Read only- The universally unique identifier of the client as a string.
Client.type
Read only- The client's type as a string. It can be "
window"
, "worker"
, or "sharedworker"
. Client.url
Read only- The URL of the client as a string.
Specifications
Specification | Status | Comment |
---|---|---|
Service Workers The definition of 'Client' in that specification. |
Editor's Draft | Initial definition. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | 40 | 44.0 (44.0)[1] | No support | 27 | No support |
type property |
60 | 54.0 (54.0) | ? | 47 | ? |
Feature | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | 40 | 40 | 44.0 (44.0) | No support | 27 | No support |
type property |
60 | 60 | 54.0 (54.0) | ? | 47 | ? |
- [1] Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR.)