jQuery Validate验证框架详解
jQuery校验官网地址：http://bassistance.de/jquery-plugins/jquery-plugin-validation
一、导入js库
<script type="text/javascript" src="<%=path %>/validate/jquery-1.6.2.min.js"></script> <script type="text/javascript" src="<%=path %>/validate/jquery.validate.min.js"></script>
注：<%=request.getContextPath() %>返回web项目的根路径。
二、默认校验规则
(1)、required:true 必输字段 (2)、remote:"remote-valid.jsp" 使用ajax方法调用remote-valid.jsp验证输入值 (3)、email:true 必须输入正确格式的电子邮件 (4)、url:true 必须输入正确格式的网址 (5)、date:true 必须输入正确格式的日期，日期校验ie6出错，慎用 (6)、dateISO:true 必须输入正确格式的日期(ISO)，例如：2009-06-23，1998/01/22 只验证格式，不验证有效性 (7)、number:true 必须输入合法的数字(负数，小数) (8)、digits:true 必须输入整数 (9)、creditcard:true 必须输入合法的信用卡号 (10)、equalTo:"#password" 输入值必须和#password相同 (11)、accept: 输入拥有合法后缀名的字符串（上传文件的后缀） (12)、maxlength:5 输入长度最多是5的字符串(汉字算一个字符) (13)、minlength:10 输入长度最小是10的字符串(汉字算一个字符) (14)、rangelength:[5,10] 输入长度必须介于 5 和 10 之间的字符串")(汉字算一个字符) (15)、range:[5,10] 输入值必须介于 5 和 10 之间 (16)、max:5 输入值不能大于5 (17)、min:10 输入值不能小于10
三、默认的提示
messages: {
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 g眉ltiges 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: $.validator.format("Please enter no more than {0} characters."),
minlength: $.validator.format("Please enter at least {0} characters."),
rangelength: $.validator.format("Please enter a value between {0} and {1} characters long."),
range: $.validator.format("Please enter a value between {0} and {1}."),
max: $.validator.format("Please enter a value less than or equal to {0}."),
min: $.validator.format("Please enter a value greater than or equal to {0}.")
},如需要修改，可在js代码中加入：
$.extend($.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: $.validator.format("请输入一个长度最多是 {0} 的字符串"),
minlength: $.validator.format("请输入一个长度最少是 {0} 的字符串"),
rangelength: $.validator.format("请输入一个长度介于 {0} 和 {1} 之间的字符串"),
range: $.validator.format("请输入一个介于 {0} 和 {1} 之间的值"),
max: $.validator.format("请输入一个最大为 {0} 的值"),
min: $.validator.format("请输入一个最小为 {0} 的值")
});推荐做法，将此文件放入messages_cn.js中，在页面中引入
<script type="text/javascript" src="<%=path %>/validate/messages_cn.js"></script>
四、使用方式
1、metadata用法，将校验规则写到控件中
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName() + ":"
+ request.getServerPort() + path + "/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>jQuery Validate验证框架详解-metadata用法</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery-1.6.2.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery.validate.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/jquery.metadata.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/validate/messages_zh.js"></script>
<script type="text/javascript">
$(function(){
$("#myform").validate();
});
</script>
</head>
<body>
<form id="myform" method="post" action="">
<p>
<label for="myname">用户名：</label>
<!-- id和name最好同时写上 -->
<input id="myname" name="myname" class="required" />
</p>
<p>
<label for="email">E-Mail：</label>
<input id="email" name="email" class="required email" />
</p>
<p>
<label for="password">登陆密码：</label>
<input id="password" name="password" type="password"
class="{required:true,minlength:5}" />
</p>
<p>
<label for="confirm_password">确认密码：</label>
<input id="confirm_password" name="confirm_password" type="password"
class="{required:true,minlength:5,equalTo:'#password'}" />
</p>
<p>
<label for="confirm_password">性别：</label>
<!-- 表示必须选中一个 -->
<input type="radio" id="gender_male" value="m" name="gender" class="{required:true}" />
<input type="radio" id="gender_female" value="f" name="gender"/>
</p>
<p>
<label for="confirm_password">爱好：</label>
<!-- checkbox的minlength表示必须选中的最小个数,maxlength表示最大的选中个数,rangelength:[2,3]表示选中个数区间 -->
<input type="checkbox" id="spam_email" value="email" name="spam[]" class="{required:true, minlength:2}" />
<input type="checkbox" id="spam_phone" value="phone" name="spam[]" />
<input type="checkbox" id="spam_mail" value="mail" name="spam[]" />
</p>
<p>
<label for="confirm_password">城市：</label>
<select id="jungle" name="jungle" title="Please select something!" class="{required:true}">
<option value=""></option>
<option value="1">厦门</option>
<option value="2">泉州</option>
<option value="3">Oi</option>
</select>
</p>
<p>
<input class="submit" type="submit" value="立即注册" />
</p>
</form>
</body>
</html>2、将校验规则写到js代码中
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