參考：https://www.cnblogs.com/linjiqin/p/3431835.html
jQuery Validate驗證框架詳解
jQuery校驗官網地址：http://bassistance.de/jquery-plugins/jquery-plugin-validation
一、導入js庫
<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項目的根路徑。
二、默認校驗規則
(1)、required:true 必輸字段 (2)、remote:"remote-valid.jsp" 使用ajax方法調用remote-valid.jsp驗證輸入值 (3)、email:true 必須輸入正確格式的電子郵件 (4)、url:true 必須輸入正確格式的網址 (5)、date:true 必須輸入正確格式的日期，日期校驗ie6出錯，慎用 (6)、dateISO:true 必須輸入正確格式的日期(ISO)，例如：2009-06-23，1998/01/22 只驗證格式，不驗證有效性 (7)、number:true 必須輸入合法的數字(負數，小數) (8)、digits:true 必須輸入整數 (9)、creditcard:true 必須輸入合法的信用卡號 (10)、equalTo:"#password" 輸入值必須和#password相同 (11)、accept: 輸入擁有合法后綴名的字符串（上傳文件的后綴） (12)、maxlength:5 輸入長度最多是5的字符串(漢字算一個字符) (13)、minlength:10 輸入長度最小是10的字符串(漢字算一個字符) (14)、rangelength:[5,10] 輸入長度必須介於 5 和 10 之間的字符串")(漢字算一個字符) (15)、range:[5,10] 輸入值必須介於 5 和 10 之間 (16)、max:5 輸入值不能大於5 (17)、min:10 輸入值不能小於10
三、默認的提示
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代碼中加入：
$.extend($.validator.messages, {
required: "必選字段", remote: "請修正該字段", email: "請輸入正確格式的電子郵件", url: "請輸入合法的網址", date: "請輸入合法的日期", dateISO: "請輸入合法的日期 (ISO).", number: "請輸入合法的數字", digits: "只能輸入整數", creditcard: "請輸入合法的信用卡號", equalTo: "請再次輸入相同的值", accept: "請輸入擁有合法后綴名的字符串", maxlength: $.validator.format("請輸入一個長度最多是 {0} 的字符串"), minlength: $.validator.format("請輸入一個長度最少是 {0} 的字符串"), rangelength: $.validator.format("請輸入一個長度介於 {0} 和 {1} 之間的字符串"), range: $.validator.format("請輸入一個介於 {0} 和 {1} 之間的值"), max: $.validator.format("請輸入一個最大為 {0} 的值"), min: $.validator.format("請輸入一個最小為 {0} 的值") });
推薦做法，將此文件放入messages_cn.js中，在頁面中引入
<script type="text/javascript" src="<%=path %>/validate/messages_cn.js"></script>
四、使用方式 1、metadata用法，將校驗規則寫到控件中
<%@ 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驗證框架詳解-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">用戶名：</label> <!-- id和name最好同時寫上 --> <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">登陸密碼：</label> <input id="password" name="password" type="password" class="{required:true,minlength:5}" /> </p> <p> <