jquery的表单验证2

		<script type="text/javascript" src="js/jquery.js"></script>
		<script type="text/javascript" src="js/jquery.validate.js"></script>

<script type="text/javascript"> 

$().ready(function() {
 $("#signupForm").validate({
        rules: {
   firstname: "required",
   email: {
    required: true,
    email: true
   },
   password: {
    required: true,
    minlength: 5
   },
   confirm_password: {
    required: true,
    minlength: 5,
    equalTo: "#password"
   }
  },
        messages: {
   firstname: "请输入姓名",
   email: {
    required: "请输入Email地址",
    email: "请输入正确的email地址"
   },
   password: {
    required: "请输入密码",
    minlength: jQuery.format("密码不能小于{0}个字 符")
   },
   confirm_password: {
    required: "请输入确认密码",
    minlength: "确认密码不能小于5个字符",
    equalTo: "两次输入密码不一致不一致"
   }
  }
    });
});

</script>



<form id="signupForm" method="get" action="">
			<p>
				<label for="firstname">
					Firstname
				</label>
				<input id="firstname" name="firstname" />
			</p>
			<p>
				<label for="email">
					E-Mail
				</label>
				<input id="email" name="email" />
			</p>
			<p>
				<label for="password">
					Password
				</label>
				<input id="password" name="password" type="password" />
			</p>
			<p>
				<label for="confirm_password">
					确认密码
				</label>
				<input id="confirm_password" name="confirm_password" type="password" />
			</p>
			<p>
				<input class="submit" type="submit" value="Submit" />
			</p>
		</form>