Reports pointer activity.
Creates a new PointerActivityObserver object.
PointerActivityObserver
A function that is called whenever a pointer activity is detected.
An optional object that customizes this observer.
Ends the all observing.
Starts observing of the target element.
target
An Element to be observed.
Element
Ends the observing of target element.
An Element to be unobserved.
Reports pointer activity.