<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script type="text/javascript">
var a=1;
var b="呵呵";
var c=function myf(){};
//强转
var a_qzh=a.toString();
var b_qzh=Number(a);
document.write(
"var a=1的数据类型是:"+ typeof a+"<br />"+
"var b='呵呵'的数据类型是:"+ typeof b+"<br />"+
"var c=function myf(){};的数据类型是:"+ typeof c+"<br />"+
"-------------以下是经过强转了的结果-------------"+"<br />"+
"a强转后的结果是:"+typeof a_qzh+"<br />"+
"b强转后的结果是:"+typeof b_qzh+"<br />"
);
</script>
</body>
</html>