Returns true if an element is in full-screen mode; otherwise returns false.
This property is read-only.
Flag that indicates whether or not an element is currently in full-screen mode.
An element is in full-screen mode
No element is in full-screen mode
Because this property only returns true when an element is currently in full-screen mode, it shouldn't be used for feature detection.
As of Microsoft Edge, the experimental "ms" prefix was removed from msFullscreenEnabled. The recommended usage is as follows:
|IE Version||Recommended Usage|
|Prior to Internet Explorer 11||not implemented|
|Microsoft Edge and beyond||fullscreenEnabled|
For improved compatibility with legacy sites, webkitFullscreenEnabled is also supported as an alias of fullscreenEnabled in Microsoft Edge.