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 has property of the MediaKeyStatusMap interface returns a Boolean asserting whether a value has been associated with the given key.
var boolean = mediaKeyStatusMap(key)
A Boolean.
| Specification | Status | Comment |
|---|---|---|
| Encrypted Media Extensions | Working Draft | Initial definition. |
| 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 |
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https://developer.mozilla.org/en-US/docs/Web/API/MediaKeyStatusMap/has