拖动

来源:互联网 发布:中国宏观经济数据8月 编辑:程序博客网 时间:2024/05/19 23:56
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<script>  
var  ms=0;  
function  did(obj){  
         ms
=obj;  
         event.srcElement.setCapture();  
         x
=document.all(ms).style.pixelLeft-event.x;  
         y
=document.all(ms).style.pixelTop-event.y;  
}
  

function  document.onmousemove(){  
if(ms){  
         document.getElementById(ms).style.pixelLeft
=x+event.x;  
         document.getElementById(ms).style.pixelTop
=y+event.y;  
         }
  
}
  

function  document.onmouseup(){  
if(ms){  
        
//alert(ms);
         event.srcElement.releaseCapture();  
         ms
=0;  
         }
  
}
  
</script>  

<body>
    
<div id="a1" style="position:absolute;background-color:black; height:200px; width: 50px; ">
    
<div id="a2" onmousedown="did('a1')"  style="background-color: #f2f2f2; height:100px; width:30px; cursor: move;">拖动层</div>
    
</div>
</body>
</html>