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move.html
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move.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>无标题文档</title>
<style type="text/css">
#div1{width:200px; height:200px;
background:#F00;
position:absolute; left:100px; top:100px;}
</style>
<script>
var timer=null;
function startMove(){
var oDiv=document.getElementById('div1');
clearInterval(timer);
timer=setInterval(function(){
if(oDiv.offsetLeft==300){
clearInterval(timer);
}
else{
oDiv.style.left=oDiv.offsetLeft+2+'px';
};
},30);
};
</script>
</head>
<body>
<input type="button" id="btn1" value="开始运动" onclick="startMove()" />
<div id="div1"></div>
</body>
</html>