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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.
Working Draft Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung Internet
Basic support
Experimental
Chrome Full support 40Edge Full support 17Firefox Full support 44
Notes
Full support 44
Notes
Notes Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR).
IE No support NoOpera Full support 27Safari No support NoWebView Android Full support 40Chrome Android Full support 40Edge Mobile Full support 17Firefox Android Full support 44Opera Android Full support 27Safari iOS No support NoSamsung Internet Android Full support 4.0
frameType
Experimental
Chrome Full support 43Edge Full support 17Firefox Full support 44
Notes
Full support 44
Notes
Notes Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR).
IE No support NoOpera Full support 30Safari No support NoWebView Android Full support 43Chrome Android Full support 43Edge Mobile Full support 17Firefox Android Full support 44Opera Android Full support 30Safari iOS No support NoSamsung Internet Android Full support 4.0
id
Experimental
Chrome Full support 40Edge ? Firefox Full support 44
Notes
Full support 44
Notes
Notes Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR).
IE No support NoOpera Full support 27Safari No support NoWebView Android Full support 40Chrome Android Full support 40Edge Mobile ? Firefox Android Full support 44Opera Android Full support 27Safari iOS No support NoSamsung Internet Android Full support 4.0
postMessage
Experimental
Chrome Full support 45Edge ? Firefox Full support 44
Notes
Full support 44
Notes
Notes Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR).
IE No support NoOpera Full support 32Safari No support NoWebView Android Full support 45Chrome Android Full support 45Edge Mobile No support NoFirefox Android Full support 44Opera Android Full support 32Safari iOS No support NoSamsung Internet Android Full support 5.0
type
Experimental
Chrome Full support 60Edge ? Firefox Full support 54IE No support NoOpera Full support 47Safari No support NoWebView Android Full support 60Chrome Android Full support 60Edge Mobile ? Firefox Android Full support 54Opera Android Full support 47Safari iOS No support NoSamsung Internet Android No support No
url
Experimental
Chrome Full support 40Edge ? Firefox Full support 44
Notes
Full support 44
Notes
Notes Service workers (and Push) have been disabled in the Firefox 45 & 52 Extended Support Releases (ESR).
IE No support NoOpera Full support 27Safari No support NoWebView Android Full support 40Chrome Android Full support 40Edge Mobile ? Firefox Android Full support 44Opera Android Full support 27Safari iOS No support NoSamsung 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.

See also

ドキュメントのタグと貢献者

最終更新者: fscholz,