The BroadcastChannel() constructor creates a new BroadcastChannel and connects it to the underlying channel.

Note: This feature is available in Web Workers.


 channel = new BroadcastChannel(channel);


Is a DOMString representing the name of the channel; there is one single channel with this name for all browsing contexts with the same origin.


// create a new channel listening to the "internal_notification" channel.

var bc = new BroadcastChannel('internal_notification');
bc.postMessage('New listening connected!');


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

Browser compatibility

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ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
BroadcastChannel() constructorChrome 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


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

See also