jquery validate使用和扩展规则，jqueryvalidate

index.html

<!--导入必须项-->

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

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

<!--

{required:true,minlength:5,equalTo:'#password'} 在class里面如果需要使用{}必须加metadata.js

-->

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

<!--

自定义扩展

-->

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

<style type="text/css">

label.error {

padding-left: 2px;

padding-bottom: 2px;

font-weight: bold;

color: red;

font-size:13px;

}

</style>

<form id="signupForm" method="get" action="">

<p>

<label for="firstname">Firstname</label>

<input id="firstname" name="firstname" class="required maxrang {haveBlank:true}" />

</p>

<p>

<label for="email">E-Mail</label>

<input id="email" name="email" class="required email" />

</p>

<p>

<label for="email">E-Mail(自定义规则 isEmail)</label>

<input id="email" name="email" class="required isEmail" />

</p>

<p>

<label for="password">Password</label>

<input id="password" name="password" type="password" class="{required:true,minlength:5}" />

</p>

<p>

<label for="confirm_password">确认密码</label>

<!--{required:true,minlength:5,equalTo:'#password'} 需要引入 metadata.js-->

<input id="confirm_password" name="confirm_password" type="password" class="{required:true,minlength:5,equalTo:'#password'}" />

</p>

<p>

<input class="submit" type="submit" value="Submit"/>

</p>

</form>

<script type="text/javascript">

$().ready(function() {

//表单提交

$("#signupForm").validate();

});

</script>
jquery.validate.ext.js

//重新书写提示
jQuery.extend(jQuery.validator.messages, {
required: "必选字段",
remote: "请修正该字段",
email: "请输入正确格式的电子邮件",
url: "请输入合法的网址",
date: "请输入合法的日期",
dateISO: "请输入合法的日期 (ISO).",
number: "请输入合法的数字",
digits: "只能输入整数",
creditcard: "请输入合法的信用卡号",
equalTo: "请再次输入相同的值",
accept: "请输入拥有合法后缀名的字符串",
maxlength: jQuery.validator.format("请输入一个 长度最多是 {0} 的字符串"),
minlength: jQuery.validator.format("请输入一个 长度最少是 {0} 的字符串"),
rangelength: jQuery.validator.format("请输入 一个长度介于 {0} 和 {1} 之间的字符串"),
range: jQuery.validator.format("请输入一个介于 {0} 和 {1} 之间的值"),
max: jQuery.validator.format("请输入一个最大为{0} 的值"),
min: jQuery.validator.format("请输入一个最小为{0} 的值")
});
//自定义扩展
jQuery.validator.addMethod("isMobile", function(value, element) {
var length = value.length;
var mobile = /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1}))+\d{8})$/;
return this.optional(element) || (length == 11 && mobile.test(value));
}, "手机格式不正确");
jQuery.validator.addMethod("isEmail", function(value,element){
var email=/^(\w)+(\.\w+)*@(\w)+((\.\w+)+)$/;
return this.optional(element)||email.test(true);
},"邮箱格式不正确");
jQuery.validator.addMethod("filterDBcom", function(value, element) {
var command = /select|update|delete|insert|declare|dbcc|alter|drop|creat|backup|add|set|open|close|exec|count|’|"|=|;|>|<|%/i;
return this.optional(element) || !(command.test(value));
}, "不能包含sql特殊字符");
jQuery.validator.addMethod("filterHTML", function(value, element) {
var chrnum = /<[^>]+>/;
return this.optional(element) || !(chrnum.test(value));
}, "不用包含html字符");
jQuery.validator.addMethod("isIp", function(value, element) {
var chrnum = /^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/;
return this.optional(element) || chrnum.test(value);
}, "ip格式不正确");
jQuery.validator.addMethod("haveBlank", function(value, element) {
var is = value.indexOf(" ") >= 0?false:true;
return this.optional(element) || is;
}, "不能包含空格");

//错误提示信息创建什么标签<label>xxxx</label>
$.validator.setDefaults({
errorElement : "label"
});

效果