Baseline 2022

Newly available

Since March 2022, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

Note: This feature is available in Web Workers.

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, except the object that sent the message.

EventTarget BroadcastChannel



Creates an object linking to the named channel.

Instance properties

This interface also inherits properties from its parent, EventTarget. Read only

Returns a string, the name of the channel.

Instance methods

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.



Fired when a message arrives on the channel. Also available via the onmessage property.


Fired when a message arrives that can't be deserialized. Also available via the onmessageerror property.


HTML Standard
# broadcasting-to-other-browsing-contexts

Browser compatibility

BCD tables only load in the browser

See also