<html>
<head>
<title>检查变量的类型</title>
</head>
<body>
<script language="javascript">
<!--
name = "刘洪辉";
age = 22;
document.write('name变量的类型是：',typeof(name),'<br>');
document.write('age变量的类型是：',typeof(age),'<br>');
document.write('document的类型是：',typeof(document));
//-->
</script>
</body>
</html>