fullscreenElement property
Element?
get
fullscreenElement
The
Document.fullscreenElement
read-only
property returns the Element that is currently being presented in
fullscreen mode in this document, or null
if fullscreen mode is not
currently in use.
Although this property is read-only, it will not throw if it is modified (even in strict mode); the setter is a no-operation and it will be ignored.
Implementation
external Element? get fullscreenElement;