WebKit/Blink supports three overloads of window.postMessage(): "postMessage(message, targetOrigin)", "postMessage(message, targetOrigin, transferables)" and "postMessage(message, transferables, targetOrigin)" The last one being an accident of history as implementation and spec initially evolved, but an overload that got stuck. As it has little or no actual use (Link1), it will be deprecated and removed. Any remaining uses will have to swap arguments.
Documentation
Status in Chromium
Deprecated (tracking bug) in:
- Chrome for desktop release 52
- Chrome for Android release 52
- Chrome for iOS release 52
- Android WebView release 52
Consensus & Standardization
After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.
- No signal
- No signal
- No signal
- No signals
Owner
Last updated on 2020-11-09