The BroadcastChannel interface represents a named channel that any browsing context of a given origin can subscribe to. It allows communication between different documents (in different windows, tabs, frames or iframes) of the same origin. Messages are broadcasted via a message event fired at all BroadcastChannel objects listening to the channel.

Note: This feature is available in Web Workers.


Creates an object linking to the named channel.


This interface also inherits properties from its parent, EventTarget.

Returns a DOMString, the name of the channel.

Event handlers

An EventHandler property that specifies the function to execute when a message event is fired on this object.
An EventHandler called when a MessageEvent of type MessageError is fired—that is, when it receives a message that cannot be deserialized.


This interface also inherits methods from its parent, EventTarget.

Sends the message, of any type of object, to each BroadcastChannel object listening to the same channel.
Closes the channel object, indicating it won't get any new messages, and allowing it to be, eventually, garbage collected.


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

Browser compatibilityUpdate compatibility data on GitHub

Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 54 ? 38 No 41 No
BroadcastChannel() constructor 54 ? 38 No 41 No
name 54 ? 38 No 41 No
onmessage 54 ? 38 No 41 No
onmessageerror 60 ? 57 No 47 No
close 54 ? 38 No 41 No
postMessage 54 ? 38 No 41 No
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support 54 54 ? ? 41 No 6.0
BroadcastChannel() constructor 54 54 ? ? 41 No 6.0
name 54 54 ? ? 41 No 6.0
onmessage 54 54 ? ? 41 No 6.0
onmessageerror 60 60 ? ? 47 No No
close 54 54 ? ? 41 No 6.0
postMessage 54 54 ? ? 41 No 6.0

See also

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