jquery validation插件表单验证的一个例子

messages_cn.js  （不引用messages_cn.js是英文的提示，用了是中文）

required: "This field is required.", 
remote: "Please fix this field.", 
email: "Please enter a valid email address.", 
url: "Please enter a valid URL.", 
date: "Please enter a valid date.", 
dateISO: "Please enter a valid date (ISO).", 
dateDE: "Bitte geben Sie ein gültiges Datum ein.", 
number: "Please enter a valid number.", 
numberDE: "Bitte geben Sie eine Nummer ein.", 
digits: "Please enter only digits", 
creditcard: "Please enter a valid credit card number.", 
equalTo: "Please enter the same value again.", 
accept: "Please enter a value with a valid extension 
maxlength: Please enter no more than {0} characters 
minlength: Please enter at least {0} characters 
rangelength: Please enter a value between {0} and {1} characters long. 
range: Please enter a value between {0} and {1}. 
max: Please enter a value less than or equal to {0}. 
min: Please enter a value greater than or equal to {0}. 
<script type="text/javascript"> 
$(function() { 
$("#btnOk").click(function() { 
$("#form1").validate({ rules: { 
username: { required: true, minlength: 2 }, 
email: { required: true, email: true }, 
url: { required: true, url: true }, 
comment: "required" 
} 
}); 
}); 
}); 
</script> 
<body> 
<form id="form1" runat="server" action=""> 
<fieldset> 
<legend>一个简单的验证带验证评论的例子</legend> 
<p> 
<label for="cusername">姓名</label><em>*</em> 
<input type="text" id="cusername" name="username" size="25"/> 
</p> 
<p> 
<label for="cemail">邮件</label><em>*</em> 
<input type="text" id="cemail" name="email" size="25"/> 
</p> 
<p> 
<label for="curl">网址</label><em>*</em> 
<input type="text" id="curl" name="url" size="25"/> 
</p> 
<p> 
<label for="ccomment">你的评论</label><em>*</em> 
<textarea id="ccomment" name="comment"cols="22"></textarea> 
</p> 
<p> 
<%--<input type="submit" id="send" value="提交"/>--%> 
<asp:Button ID="btnOk" runat="server" Text="提交" onclick="btnOk_Click"/> 
</p> 
</fieldset> 
</form> 
</body> 