e.type这个方法可以返回事件的类型<div>111111</div> <script> var div=document.querySelector('div'); div.addEventListener('click',fn) div.addEventListener('mouseover',fn) div.addEventListener('mouseout',fn) function fn
e.type这个方法可以返回事件的类型<div>111111</div> <script> var div=document.querySelector('div'); div.addEventListener('click',fn) div.addEventListener('mouseover',fn) div.addEventListener('mouseout',fn) function fn