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<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<meta name="keywords" content="div移动">
<title>div移动</title>
</head>
<body>
<div id="div" style="width:200px; position:absolute; height:200px; background-color:#F90; "></div> <!-- 做一个div 0.0 -->
</body>
</html>
<script type="text/javascript">
var div = document.getElementById(‘div‘);
document.onmousedown = function(e) //鼠标点击事件
{
e = e || window.event;
var tops = document.getElementById(‘div‘).offsetTop; //div四个角的坐标（200可变动）
var lefts = document.getElementById(‘div‘).offsetLeft;
var rights = lefts+200;
var bottoms = tops+200;
var mousex = e.pageX || e.clientX; //点击时的鼠标位置
var mousey = e.pagey || e.clientY;
var topz = document.getElementById(‘div‘).getBoundingClientRect().top; //获取div的左上位置
var leftz = document.getElementById(‘div‘).getBoundingClientRect().left;
if((mousex > lefts && mousex < rights)&&(mousey > tops && mousey < bottoms))
{ //判断鼠标点击时是否在div中
document.onmousemove = function(e) //鼠标滑动事件
{
var mousexx = e.pageX || e.clientX; //获取实时鼠标位置
var mouseyy = e.pagey || e.clientY;
var xx = mousexx - mousex; //求移动的距离
var yy = mouseyy - mousey;
leftzz = leftz + xx;
topzz = topz + yy;
div.style.left = leftzz +"px"; //对div的左上角进行计算，与鼠标移动的距离相同
div.style.top = topzz +"px";
}
}
}
document.onmouseup = function(){ //鼠标抬起将滑动事件解除
document.onmousemove = null;
}
</script>
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原文地址：http://www.cnblogs.com/Kqingniao/p/5949766.html
