lovecoding
/
VIP28


			
				
					
						
						
							1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859
							<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    *{
      margin: 0;
      padding: 0;
    }
    #div1{
      width: 300px;
      height: 300px;
      background: greenyellow;
    }
    #div2{
      width: 200px;
      height: 200px;
      background: red;
    }
    #div3{
      width: 100px;
      height: 100px;
      background: orange;
    }
  </style>
</head>
<body>
  <div id="div1">
    <div id="div2">
      <div id="div3"></div>
    </div>
  </div>
  <script>
    /* 
    js的事件流  从触发事件到处理事件的整个流程
    包括事件捕获和事件冒泡
    */
    var div1 = document.getElementById('div1')
    var div2 = document.getElementById('div2')
    var div3 = document.getElementById('div3')

    div1.addEventListener('click',function(){
      console.log(111)
    },true)
    div2.addEventListener('click',function(){
      console.log(222)
    },true)
    // div3.addEventListener('click',function(){
    //   console.log(333)
    // },true)
    div3.onclick = function(){
      console.log(333)
    }
  </script>
</body>
</html>