postMessage

The postMessage() global method sends cross-origin messages to windows and workers, including popups and iframes. Also known as cross-document messaging.

Baseline Status: Achieved Widely Available on Jan 29, 2018 (Cross-browser Newly Available since Jul 29, 2015).

Desktop Browser Engine Support

Google Chrome

2

Supported

Mozilla Firefox

3

Supported

Apple Safari

4

Supported

Microsoft Edge

12

Supported

Mobile Browser Engine Support

Chrome Android

18

Firefox Android

4

Safari iOS

3.2

Specifications and References

Specification ↗ Can I Use (x-doc-messaging) ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.DedicatedWorkerGlobalScope.message_event ↗ api.DedicatedWorkerGlobalScope.postMessage ↗ api.MessageEvent ↗ api.MessageEvent.MessageEvent ↗ api.MessageEvent.data ↗ api.MessageEvent.lastEventId ↗ api.MessageEvent.origin ↗ api.MessageEvent.source ↗ api.Window.message_event ↗ api.Window.postMessage ↗ api.Worker.message_event ↗ api.Worker.postMessage ↗