MDN’s new design is in Beta! A sneak peek:


This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The forEach property of the MediaKeyStatusMap interface calls callback once for each key-value pair in the status map, in insertion order. If an argument is present it will be passed to the callback.


mediaKeyStatusMap.forEach(callback[, thisArg])


Function to execute for each element, taking three arguments:
The current element being processed in the array.
The index of the current element being processed in the array.
Which array forEach() is being applied to.
thisArg Optional
Value used as this when executing callback.




Specification Status Comment
Encrypted Media Extensions Working Draft Initial definition.

Browser Compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 42.0 ? ? 29 ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 43.0 ? ? ? 29 ? 42.0

Document Tags and Contributors

 Contributors to this page: bunnybooboo, jpmedley
 Last updated by: bunnybooboo,