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

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support 54.0 38 (38) No support 41 No support
Available in workers 54.0 38 (38) No support 41 No support
Feature Android Android Webview Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support No support 38.0 (38) No support 41 No support 54.0
Available in workers No support No support 38.0 (38) No support 41 No support 54.0

See also

Document Tags and Contributors

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