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                        /jQuery基礎(五)一Ajax應用與常用插件

麻煩哪位好心人幫忙看看，為什么我的就是不行

<!DOCTYPE html>
<html>
??? <head>
??????? <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
??????? <script src="http://labs.baidu.com/jquery/1.9.0/jquery.js" type="text/javascript"></script>
??????? <title>挑戰題</title>
??? </head>
??? <body>
??????? <form>
??????????? <input id="text1" type="text" name="name" value="姓名"><br>
??????????? <input id="text2" type="text" name="idnum" value="學號"><br>
??????????? <input id="sub1" type="button" value="提交信息">
??????????? <input id="sub2" type="button" value="顯示信息">
??????? </form>
??????????? <ul></ul>
??????? <script>
??????????? var $text1=$("#text1");
??????????? var $text2=$("#text2");
??????????? var json=[];
??????????? $("#sub1").click(function(){
???????????????? json.push({
??????????????????? "name" : $text1.val(),
??????????????????? "idnum": $text2.val()
??????????????? });
??????????????? $text1.val('');
??????????????? $text2.val('');
??????????? });
??????????? $("#sub2").click(function(){
??????????????? $.each(json,function(i){
???????????????????? $("ul").append('<li><b>'+ json[i].name + '</b>:<b>' + json[i].idnum + '</b></li>');
??????????????? });
??????????? });
??????? </script>
??? </body>
</html>