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().
Client.postMessage()Sends a message to the client.
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.
| Specification |
|---|
| Service Workers 1 # client-interface |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
Client |
40 |
17 |
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No |
27 |
11.1 |
40 |
40 |
44 |
27 |
11.3 |
4.0 |
frameType |
43 |
17 |
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No |
30 |
11.1 |
43 |
43 |
44 |
30 |
11.3 |
4.0 |
id |
40 |
17 |
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No |
27 |
11.1 |
40 |
40 |
44 |
27 |
11.3 |
4.0 |
postMessage |
45 |
17 |
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No |
32 |
11.1 |
45 |
45 |
44 |
32 |
11.3 |
5.0 |
type |
60 |
17 |
54 |
No |
47 |
11.1 |
60 |
60 |
54 |
44 |
11.3 |
8.0 |
url |
40 |
17 |
44
Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.
|
No |
27 |
11.1 |
40 |
40 |
44 |
27 |
11.3 |
4.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/Client