The event’s target is the same element that received the touchstart
event corresponding to the touch point,even if the touch point has
moved outside that element.

这与mousemove和mouseup不同,其中目标实际上是鼠标结束的DOM元素.

在没有使用任何库的情况下,最好的方法是获取我的touchmove或touchend事件发生的元素？