<!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" xml:lang="zh-cn">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<title>网页标题</title>
<meta name="keywords" content="关键字列表" />
<meta name="description" content="网页描述" />
<link rel="stylesheet" type="text/css" href="" />
<style type="text/css"></style>
</head>
<body>
<form id="demoForm" method='post'>
<fieldset>
<legend>用户登录</legend>
<p>
<label for="username">用户名</label>
<input type="text" id="username" name="username">
</p>
<p>
<label for="password">密码</label>
<input type="password" id="password" name="password">
</p>
<p>
<input type="submit" value="提交">
</p>
</fieldset>
</form>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.validate.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:"用户名必须填写",
minlength:"用户名最少为2字符",
maxlength:"用户名最大为10字符"
},
password:{
required:"密码必须填写",
minlength:"密码最少为2字符",
maxlength:"密码最大为16字符"
}
}
});
});
</script>
</body>
</html>
46行少了一个逗号，亲测
你有引入 jquery.js 和jquery.validation.js 吗？
你检查一下你的语法，是中英文的问题不
46行少了一个逗号