不知道怎么错了，
<!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>使用getScript()方法异步加载并执行js文件</title>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js" type="text/javascript"></script>
<link href="style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="divtest">
<div class="title">
<span class="fl">我最喜欢的运动</span>
<span class="fr">
<input id="btnShow" type="button" value="加载" />
</span>
</div>
<ul></ul>
</div>
<script type="text/javascript">
$(function () {
$("#btnShow").bind("click", function () {
var $this = $(this);
$.getScript('http://www.imooc.com/data/sport_f.js',function(){
$this.attr("disabled", "true");
});
})
});
</script>
</body>
</html>
