lovecoding
/
VIP20


			
				
					
						
						
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							<!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: 200px;
      height: 200px;
      background: aqua;
      position: absolute;
    }
  </style>
</head>
<body>
  <div id="div1"></div>
  <script>
    var div1 = document.getElementById('div1')
    //鼠标按下时触发的事件
    div1.onmousedown = function(e){
      console.log(e.clientX,e.clientY)
      //获取鼠标在div中的位置
      var xLeft = e.clientX - div1.offsetLeft
      var xTop = e.clientY - div1.offsetTop
      console.log(xLeft,xTop)
      div1.onmousemove = function(e){
        console.log(e.clientX)
        div1.style.left = e.clientX - xLeft +'px'
        div1.style.top = e.clientY - xTop + 'px'
      }
    }
    //鼠标抬起时触发的事件
    div1.onmouseup = function(){
      div1.onmousemove = null
    }
  </script>
</body>
</html>