为什么我这链接还可以使用呢？
<!DOCTYPE html>
<html>
<head>
<title>*选择器</title>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js" type="text/javascript"></script>
</head>
<body>
<form action="#">
<input id="Button1" type="button" value="button" />
<input id="Text1" type="text" />
<input id="Radio1" type="radio" />
<input id="Checkbox1" type="checkbox" />
</form>
<div>
<p>段落</p>
<div>div</div>
<a href="http://www.baidu.com" target="_black">链接</a>
</div>
<script type="text/javascript">
$("form *").attr("disabled", "true");
$("div *").attr("disabled", "true");
</script>
</body>
</html>
