为什么oDiv.style.width=parseInt(oDiv.style.width)-5+'px';写这条语句没反应
<!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=gb2312" />
<title>无标题文档</title>
<style>
*{margin:0;
padding:0;}
#div1{
width:200px;
height:200px;
background-color:#FF0000;
border:1px solid #000;
}
</style>
<script>
window.onload=function(){
startMove();
}
function startMove(){
setInterval(function(){
var oDiv=document.getElementById('div1');
oDiv.style.width=parseInt(oDiv.style.width)-5+'px';
},30)
}
</script>
</head>
<body>
<div id="div1"></div>
</body>
</html>
