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 Internet Explorer for Windows 10 Technical Preview, 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|
|Internet Explorer for Windows 10 Technical Preview and beyond||fullscreenEnabled|
For improved compatibility with legacy sites, webkitFullscreenEnabled is also supported as an alias of fullscreenEnabled in Internet Explorer for Windows 10 Technical Preview.