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 type="submit" value="Submit" /></p></form>

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