BroadcastChannel.postMessage()

The BroadcastChannel.postMessage() sends a message, which can be of any kind of Object, to each listener in any browsing context with the same origin. The message is transmitted as a 'message' event targeted at each BroadcastChannel bound to the channel.

Note: This feature is available in Web Workers

Syntax

channel.postMessage(message)

Parameters

message

Data to be sent to the other window. The data is serialized using the structured clone algorithm. This means you can pass a broad variety of data objects safely to the destination window without having to serialize them yourself.

Return value

None.

Specifications

Specification
HTML Standard
# dom-broadcastchannel-postmessage-dev

Browser compatibility

BCD tables only load in the browser

See also