BroadcastChannel: close() method - Web APIs | MDN

BroadcastChannel: close() method - Web APIs | MDN
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BroadcastChannel: close() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2022.
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Note:
This feature is available in
Web Workers
The
close()
method of the
BroadcastChannel
interface 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.
Syntax
js
close()
Parameters
None.
Return value
None (
undefined
).
Examples
js
// Connect to a channel
const bc = new BroadcastChannel("test_channel");

// More operations (like postMessage, …)

// When done, disconnect from the channel
bc.close();
Specifications
Specification
HTML
# dom-broadcastchannel-close-dev
Browser compatibility
See also
BroadcastChannel
, the interface it belongs to.
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This page was last modified on
Jun 26, 2025
by
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