lovecoding
/
VIP28


			
				
					
						
						
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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')
    //鼠标按下事件
    div1.onmousedown = function(e){
      //鼠标距离边框的长度
      var xLeft = e.clientX - div1.offsetLeft
      var xTop = e.clientY - div1.offsetTop

      console.log(xLeft,xTop)
      //鼠标移动事件
      div1.onmousemove = function(e){
        div1.style.left = e.clientX - xLeft + 'px'
        div1.style.top = e.clientY - xTop + 'px'
      }
    }
    //鼠标抬起事件
    div1.onmouseup = function(){
      div1.onmousemove = null
    }
  </script>
</body>

</html>