BroadcastChannel

A named messaging channel that broadcasts to every BroadcastChannel instance created with the same name. Used to coordinate work between spawned contexts inside one qzjs runtime.

Global

Global	Type
BroadcastChannel	class

API

const a = new BroadcastChannel('work');
const b = new BroadcastChannel('work');

a.onmessage = (ev) => console.log('a got', ev.data);
b.postMessage({ task: 'sync' });   // a receives it

Member	Description
new BroadcastChannel(name)	Subscribe to a named channel
postMessage(data)	Broadcast to all other subscribers on the same name
onmessage	Handler called with { data } on each broadcast
close()	Unsubscribe; no further messages delivered

Notes

• Broadcast does not loop back to the sender.
• Messages are JSON-serializable; structured data is fine, but functions and proxies are not supported across the channel.