BroadcastChannel.postMessage()

The BroadcastChannel.postMessage() sends a message, which can be of any kind of Object, to each listener in any browsing context with the same origin. The message is transmitted as a message event targeted at each BroadcastChannel bound to the channel.

Note: This feature is available in Web Workers.

Syntax

var str = channel.postMessage(object);

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'BroadcastChannel.postmessage()' in that specification.
Living Standard Initial definition.

Browser compatibility

DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
postMessageChrome Full support 54Edge Full support ≤79Firefox Full support 38IE No support NoOpera Full support 41Safari No support NoWebView Android Full support 54Chrome Android Full support 54Firefox Android ? Opera Android Full support 41Safari iOS No support NoSamsung Internet Android Full support 6.0

Legend

Full support
Full support
No support
No support
Compatibility unknown
Compatibility unknown

See also