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BroadcastChannel

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.

Note: This feature is available in Web Workers

EventTarget BroadcastChannel

Constructor

BroadcastChannel()

Creates an object linking to the named channel.

Instance properties

This interface also inherits properties from its parent, EventTarget.

BroadcastChannel.name Read only

Returns a string, the name of the channel.

Instance methods

This interface also inherits methods from its parent, EventTarget.

BroadcastChannel.postMessage()

Sends the message, of any type of object, to each BroadcastChannel object listening to the same channel.

BroadcastChannel.close()

Closes the channel object, indicating it won't get any new messages, and allowing it to be, eventually, garbage collected.

Events

message

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

messageerror

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

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
BroadcastChannel 54 79 38 No 41 15.4 54 54 38 41 15.4 6.0
BroadcastChannel 54 79 38 No 41 15.4 54 54 38 41 15.4 6.0
close 54 79 38 No 41 15.4 54 54 38 41 15.4 6.0
message_event 54 79 38 No 41 15.4 54 54 38 41 15.4 6.0
messageerror_event 60 79 57 No 47 15.4 60 60 57 47 15.4 8.0
name 54 79 38 No 41 15.4 54 54 38 41 15.4 6.0
postMessage 54 79 38 No 41 15.4 54 54 38 41 15.4 6.0

See also

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https://developer.mozilla.org/en-US/docs/Web/API/BroadcastChannel