target is the source component that triggers the event , and the currentTarget property is the component that the current event is bound to . Examples are as follows:
When the inner button is clicked, the click event spreads outward in a bubbling manner , and also triggers the tap event handler function of the outer view. At this time, for the outer view:
①e.target points to the source component that triggers the event, therefore, e.target is the internal component button
②e.currentTarget points to the component that is currently triggering the event, therefore, e.currentTarget is the current view component