The BroadcastChannel.postMessage() sends a message, which can be of any kind of Object, to each listener in any browser context with the same origin. The message is transmitted as a message event targeted at each BroadcastChannel bound to the channel.
var str = channel.postMessage(object);
| Specification | Status | Comment |
|---|---|---|
| HTML Living Standard The definition of 'BroadcastChannel.postmessage()' in that specification. | Living Standard | Initial definition. |
| Desktop | ||||||
|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | |
| Basic support | 54 | ? | 38 | No | 41 | No |
| Mobile | |||||||
|---|---|---|---|---|---|---|---|
| Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | 54 | 54 | ? | ? | 41 | No | 6.0 |
BroadcastChannel, the interface it belongs to.
© 2005–2018 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/BroadcastChannel/postMessage