一、用前必备
官方网站：http://bassistance.de/jquery-plugins/jquery-plugin-validation/
API: http://jquery.bassistance.de/api-browser/plugins.html
当前版本：1.5.5
需要JQuery版本：1.2.6+, 兼容 1.3.2
<script src="../js/jquery.js" type="text/javascript"></script>
<script src="../js/jquery.validate.js" type="text/javascript"></script>
二、默认校验规则
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：
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") }); 推荐做法，将此文件放入messages_cn.js中，在页面中引入
[codept src="../js/messages_cn.js" type="text/javascript"></script> [/code
四、使用方式
1.将校验规则写到控件中
<script src="../js/jquery.js" type="text/javascript"></script> <script src="../js/jquery.validate.js" type="text/javascript"></script> <script src="./js/jquery.metadata.js" type="text/javascript"></script> $().ready(function() { $("#signupForm").validate(); }); <form id="signupForm" method="get" action=""> <p> <label for="firstname">Firstname</label> <input id="firstname" name="firstname" class="required" /> </p> <p> <label for="email">E-Mail</label> <input id="email" name="email" class="required email" /> </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> <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> 使用class="{}"的方式，必须引入包：jquery.metadata.js
可以使用如下的方法，修改提示内容：
$.metadata.setType("attr", "validate"); 这样可以使用validate="{required:true}"的方式，或者class="required"，但class="{required:true,minlength:5}"将不起作用
2.将校验规则写到代码中
$().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" } } }); }); //messages处，如果某个控件没有message，将调用默认的信息 <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> required:true 必须有值
required:"#aa:checked"表达式的值为真，则需要验证
required:function(){}返回为真，表时需要验证
后边两种常用于，表单中需要同时填或不填的元素
五、实例讲解
实例一：精简验证，通过表单对象调用validate()方法进行验证，验证规则通过html标签属性定义：以下为常用属性定义距离
class='required' //必须字段
class='mail' //邮箱验证
class='url' //URL网址验证
class='date' //正确的日期 格式满足 2012，0204，2012-02-04
class='number' //输入合法的数字
class='digits' //输入整数
minlength='' //最小输入长度
maxlength='' //最长输入长度(该值不会提示，当值达到一定字符数不可再增长)
max='' //输入的数值小于指定值
min='' //输入的数值大于指定值
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title>jQuery PlugIn - 表单验证插件实例 Validate </title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="jquery.validate.min.js"></script> <script type="text/javascript" src="messages_cn.js"></script> <style type="text/css"> * { font-family: Verdana; font-size:13px; } input[type='text']{width:200px;} textarea{width:155px;} label { width: 10em; float: left; } label.error { float: none; color: red; padding-left: .5em; vertical-align: top; } </style> <script> $(document).ready(function(){ $("#commentForm").validate(); }); </script></head><body> <form id="commentForm" method="get" action="" > <fieldset> <legend>表单验证</legend> <p><label>Name</label><input name="name" class="required" maxlength="4" minlength="2" /></p> <p><label >E-Mail</label><input name="email" class="required email" /></p> <p><label >URL</label><input name="url" class="url"/></p> <p><label>text</label><textarea name="text" cols="22" class="required"></textarea></p> <p><input class="submit" type="submit" value="提交"/></p> </fieldset> </form></body></html>实例二：方法验证，通过自定义表单规则来验证表单
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title>jQuery PlugIn - 表单验证插件实例 Validate </title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="jquery.validate.min.js"></script> <script type="text/javascript" src="messages_cn.js"></script> <style type="text/css"> * { font-family: Verdana; font-size:13px; } input[type='text']{width:200px;} textarea{width:155px;} .title{float:left;width:10em} em.error { float: none; color: red; padding-left: .5em; vertical-align: top; } .field_notice{display:none;} .checking{display:none;} </style> <script> $(document).ready(function(){ $("#commentForm").validate({ errorPlacement: function(error, element){ var error_td = element.next('em'); error_td.find('.field_notice').hide(); error_td.append(error); }, success: function(label){ label.addClass('validate_right').text('OK!'); }, onkeyup: false, rules: { name: { required:true, minlength:3, maxlength:40, remote:{ url :'index.php?ajax=1', type:'get', data:{ name : function(){ return $('#name').val(); } }, beforeSend:function(){ var _checking = $('#checking'); _checking.prev('.field_notice').hide(); _checking.next('label').hide(); $(_checking).show(); }, complete :function(){ $('#checking').hide(); } } }, email: {required: true, email: true }, url:{required:true,url:true}, text:"required" }, messages: { name: {required:"需要输入名称", minlength:"名称长度在3-40个字符之间", maxlength:"名称长度在3-40个字符之间",remote:"用户名已存在"}, email: {required:"需要输入电子邮箱", email:"电子邮箱格式不正确"}, url: {required:"需要输入URL地址", url:"URL地址格式不正确"}, text:"需要输入文本内容" }, }); }); </script></head><body> <form id="commentForm" method="get" action="" > <fieldset> <legend>表单验证</legend> <p><label class="title" >Name</label><input id="name" name="name"/> <em><label class="field_notice"></label><label id="checking" class="checking">检查中...</label></em> </p> <p><label class="title" >E-Mail</label><input name="email"/> <em><label class="field_notice"></label></em> </p> <p><label class="title" >URL</label><input name="url"/> <em><label class="field_notice"></label></em> </p> <p><label class="title" >text</label><textarea name="text" cols="22"></textarea> <em><label class="field_notice"></label></em> </p> <p><input class="submit" type="submit" value="提交"/></p> </fieldset> </form></body></html>以上就是本文的全部内容，希望对大家的学习有所帮助。
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