The initiating pointer event.
OptionalonIntersectingStart: IntersectionCallbackCallback invoked when the dragged element begins intersecting a watched element.
OptionalonIntersectingStop: IntersectionCallbackCallback invoked when the dragged element stops intersecting a watched element.
OptionalonMove: DragMoveCallbackCallback invoked after each accepted pointer movement.
Starts a pointer-driven drag operation for the pointer event target.