抠门,哈<!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>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="" />
<meta name="keywords" content="" />
<meta name="description" content="" />
<style type="text/css">
.divStyle{color:red;}
</style>
</head> <body>
<div id="divTest" class="divStyle">Test</div>
</body>
<script type="text/javascript">
<!--
var oDiv = document.getElementById("divTest");
alert(oDiv.currentStyle.color);
//-->
</script>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="" />
<meta name="keywords" content="" />
<meta name="description" content="" />
<style type="text/css">
.divStyle{color:red;}
</style>
</head> <body>
<div id="divTest" class="divStyle">Test</div>
</body>
<script type="text/javascript">
<!--
var oDiv = document.getElementById("divTest");
alert(oDiv.currentStyle.color);
//-->
</script>
</html>
hasAttribute()这么个东西如果没有color属性,oDiv.currentStyle.color返回undefined
不要用这样的方法