                        課程
                    
                        /前端開發
                        
                            /jQuery
                        
                        /jQuery插件——Validation Plugin

我的代碼怎么在頁面上沒有顯示？

<body>
<form id="demoForm">
<fieldset>
<legend>用戶登錄</legend>
<p>
<label for="username">用戶名</label>
<input type="text" id="username" name="username">
</p>
<p>
<label for="password">密碼</label>
<input type="password" id="password" name="password">
</p>
<p>
<input type="submit"value="登錄">
</p>
</fieldset>
</form>
<script src="js/jquery-1.10.0.min.js"></script>
<script? src="js/jquery.validate-1.13.1.js"></script>
<script type="text/javascript">
$(document).ready(function(){
?? ?$("#demoForm").validate({
?? ??? ?rules:{
?? ??? ??? ?username:{
?? ??? ??? ??? ?required:true,
?? ??? ??? ??? ?minlength:2,
?? ??? ??? ??? ?maxlength:10
?? ??? ??? ?},
?? ??? ??? ?password:{
?? ??? ??? ??? ?required:true,
?? ??? ??? ??? ?minlength:2,
?? ??? ??? ??? ?maxlength:16
?? ??? ??? ?}
?? ??? ?},
?? ??? ?messages:{
?? ??? ??? ?username:{
?? ??? ??? ??? ?required:"必須填寫用戶名",
?? ??? ??? ??? ?rangelength:"用戶名應該在2-10位",?? ??? ??? ??? ?
?? ??? ??? ?},
?? ??? ??? ?password:{
?? ??? ??? ??? ?required:"必須填寫密碼",
?? ??? ??? ??? ?rangelength:"密碼應該在2-16位",?? ?
?? ??? ??? ?}

?? ??? ?}
?? ?});
});
</script>
</body>