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GeezerVison is showing developer.mozilla.org — BroadcastChannel: close() method - Web APIs | MDN

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.

  • See full compatibility
  • Learn more

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 MDN contributors.

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