JS实现简洁、全兼容的拖动层实例

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我是靠谱客的博主兴奋树叶，这篇文章主要介绍JS实现简洁、全兼容的拖动层实例，现在分享给大家，希望可以做个参考。

本文实例讲述了JS实现简洁、全兼容的拖动层。分享给大家供大家参考。具体分析如下：

这是一款最简洁的JS层拖动代码，全兼容ie、ff、opera、safari……每一种浏览器都有对应的判断和实现方法，你只需复制代码到你的网页中就可使用。水平高的朋友可以继续修改，添加更多方法，使其功能更强大。

复制代码

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS拖动层</title>
</head>
<body>
<div id="f" style="position: absolute; width: 216px; height: 138px; 
background-color: skyblue;font-size: 12px; top: 210px; left: 180px;
z-index: 101; border: solid 1px blue;">
<div id="title" style="background-color: Blue; cursor: move; 
height: 20px; color: #fff;font-size: 12px; padding-top: 5px;
padding-left: 10px;">层的标题</div>
层的内容
</div>
<script type="text/javascript">
var posX;
var posY;    
fdiv = document.getElementById("f");      
document.getElementById("title").onmousedown=function(e)
{
  if(!e) e = window.event; //IE
  posX = e.clientX - parseInt(fdiv.style.left);
  posY = e.clientY - parseInt(fdiv.style.top);
  document.onmousemove = mousemove;      
}
document.onmouseup = function()
{
  document.onmousemove = null;
}
function mousemove(ev)
{
  if(ev==null) ev = window.event;//IE
  fdiv.style.left = (ev.clientX - posX) + "px";
  fdiv.style.top = (ev.clientY - posY) + "px";
}
</script>
</body>
</html>

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS拖动层</title>
</head>
<body>
<div id="f" style="position: absolute; width: 216px; height: 138px; 
background-color: skyblue;font-size: 12px; top: 210px; left: 180px;
z-index: 101; border: solid 1px blue;">
<div id="title" style="background-color: Blue; cursor: move; 
height: 20px; color: #fff;font-size: 12px; padding-top: 5px;
padding-left: 10px;">层的标题</div>
层的内容
</div>
<script type="text/javascript">
var posX;
var posY;    
fdiv = document.getElementById("f");      
document.getElementById("title").onmousedown=function(e)
{
  if(!e) e = window.event; //IE
  posX = e.clientX - parseInt(fdiv.style.left);
  posY = e.clientY - parseInt(fdiv.style.top);
  document.onmousemove = mousemove;      
}
document.onmouseup = function()
{
  document.onmousemove = null;
}
function mousemove(ev)
{
  if(ev==null) ev = window.event;//IE
  fdiv.style.left = (ev.clientX - posX) + "px";
  fdiv.style.top = (ev.clientY - posY) + "px";
}
</script>
</body>
</html>