This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The MediaKeyMessageEvent constructor creates a new MediaKeyMessageEvent object which creates a new instance of MediaKeyMessageEvent.


var mediaKeyMessageEvent = new MediaKeyMessageEvent(typeArg, options)


A DOMString containing one of May be one of license-requestlicense-renewallicense-renewal, or individualization-request.
Options are as follows:
  • messageType: A developer-defined message type that allows applications to differentiate messages without parsing them.
  • message: An array containing the message generated by the content decryption module.

Browser Compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
MediaKeyMessageEvent() constructor
Chrome Full support 42Edge Full support ≤18Firefox ? IE ? Opera ? Safari ? WebView Android No support NoChrome Android Full support 42Firefox Android ? Opera Android ? Safari iOS ? Samsung Internet Android Full support 4.0


Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.