Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
 The onencrypted property of the HTMLMediaElement is an event handler, fired whenever an encrypted event occurs, denoting the media is encrypted. 
This interface inherits from the ExtendableEvent interface.
HTMLMediaElement.onencrypted = function(encrypted) { ... }
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onencrypted | 
42  | 
13  | 
38  | 
No  | 
29  | 
12.1  | 
42  | 
42  | 
38  | 
29  | 
12.2  | 
4.0  | 
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    https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/onencrypted