BroadcastChannel: BroadcastChannel() constructor
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.
Note: This feature is available in Web Workers.
The BroadcastChannel() constructor creates a new
BroadcastChannel and connects it to the underlying channel.
Syntax
js
new BroadcastChannel(channelName)
Parameters
channelName-
A string representing the name of the channel; there is one single channel with this name for all browsing contexts with the same origin.
Examples
js
// create a new channel listening to the "internal_notification" channel.
const bc = new BroadcastChannel("internal_notification");
bc.postMessage("New listening connected!");
Specifications
| Specification |
|---|
| HTML # dom-broadcastchannel-dev |
Browser compatibility
| desktop | mobile | server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
BroadcastChannel() constructor | ||||||||||||||
See also
BroadcastChannel, the interface it belongs to.