The BroadcastChannel.close() terminates the connection to the underlying channel, allowing the object to be garbage collected. This is a necessary step to perform as there is no other way for a browser to know that this channel is not needed anymore.

Note: This feature is available in Web Workers.


var str = channel.close();


// Connect to a channel
var bc = new BroadcastChannel('test_channel');

// More operations (like postMessage, …)

// When done, disconnect from the channel


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

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support54 ?38 No41 No
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support5454 ? ?41 No6.0

See also

Document Tags and Contributors

Contributors to this page: fscholz, chrisdavidmills, nmve, jpmedley, teoli
Last updated by: fscholz,