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
js
channel.postMessage(message)
messageData 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.
None.
| Specification |
|---|
| HTML Standard # dom-broadcastchannel-postmessage-dev |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
postMessage |
54 | 79 | 38 | No | 41 | 15.4 | 54 | 54 | 38 | 41 | 15.4 | 6.0 |
BroadcastChannel, the interface it belongs to.
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https://developer.mozilla.org/en-US/docs/Web/API/BroadcastChannel/postMessage