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BroadcastChannel.postMessage

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.

Note: This feature is available in Web Workers.

Syntax

var str = channel.postMessage(object);

Specifications

Specification Status Comment
HTML Living Standard
The definition of 'BroadcastChannel.postmessage()' in that specification.		 Living Standard Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

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

See also

Edit this page on MDN

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https://developer.mozilla.org/en-US/docs/Web/API/BroadcastChannel/postMessage