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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
#main{
width: 500px;height:400px;
margin: 100px auto 20px;
border: 2px solid red;
}
p{
width: 500px;height: 50px;
margin: 0 auto;
border: 2px solid green;
line-height: 50px;
}
</style>
</head>
<body>
<div id="main"></div>
<p>坐标为:<b id="show">(0,0)</b></p>
<script type="text/javascript">
window.onload=function(){
var main=document.getElementById('main');
var show=document.getElementById('show');
main.onmousemove=function(event){
var e=event || window.event;
var m_x=e.clientX;
var m_y=e.clientY;
var mainL=this.offsetLeft;
var mainT=this.offsetTop;
var x=m_x-mainL;
var y=m_y-mainT;
show.innerHTML="("+x+","+y+")";
}
}
</script>
</body>
</html>
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