jQuery - Validate插件为表单提供强大的验证功能

jQuery Validate

导入 js 库（使用菜鸟教程提供的CDN）

<scriptsrc="http://static.runoob.com/assets/jquery-validation-1.14.0/lib/jquery.js"></script><scriptsrc="http://static.runoob.com/assets/jquery-validation-1.14.0/dist/jquery.validate.min.js"></script>

默认校验规则

默认提示

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 ).",number:"Please enter a valid number.",digits:"Please enter only digits.",creditcard:"Please enter a valid credit card number.",equalTo:"Please enter the same value again.",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}.")}

(function(factory ){if(typeofdefine ==="function"&&define.amd ){define(["jquery","../jquery.validate"],factory );}else{factory(jQuery );}}(function($ ){/*
* Translated default messages for the jQuery validation plugin.
* Locale: ZH (Chinese, 中文 (Zhōngwén), 汉语, 漢語)
*/$.extend($.validator.messages,{required:"这是必填字段",remote:"请修正此字段",email:"请输入有效的电子邮件地址",url:"请输入有效的网址",date:"请输入有效的日期",dateISO:"请输入有效的日期 (YYYY-MM-DD)",number:"请输入有效的数字",digits:"只能输入数字",creditcard:"请输入有效的信用卡号码",equalTo:"你的输入不相同",extension:"请输入有效的后缀",maxlength:$.validator.format("最多可以输入 {0} 个字符"),minlength:$.validator.format("最少要输入 {0} 个字符"),rangelength:$.validator.format("请输入长度在 {0} 到 {1} 之间的字符串"),range:$.validator.format("请输入范围在 {0} 到 {1} 之间的数值"),max:$.validator.format("请输入不大于 {0} 的数值"),min:$.validator.format("请输入不小于 {0} 的数值")});}));

<scriptsrc="http://static.runoob.com/assets/jquery-validation-1.14.0/dist/localization/messages_zh.js"></script>

使用方式

1、将校验规则写到控件中

<scriptsrc="http://static.runoob.com/assets/jquery-validation-1.14.0/lib/jquery.js"></script><scriptsrc="http://static.runoob.com/assets/jquery-validation-1.14.0/dist/jquery.validate.min.js"></script><scriptsrc="http://static.runoob.com/assets/jquery-validation-1.14.0/dist/localization/messages_zh.js"></script><script>$.validator.setDefaults({submitHandler:function(){alert("提交事件!");}});$().ready(function(){$("#commentForm").validate();});</script><formclass="cmxform"id="commentForm"method="get"action=""><fieldset><legend>输入您的名字，邮箱，URL，备注。</legend><p><labelfor="cname">Name (必需, 最小两个字母)</label><inputid="cname"name="name"minlength="2"type="text"required></p><p><labelfor="cemail">E-Mail (必需)</label><inputid="cemail"type="email"name="email"required></p><p><labelfor="curl">URL (可选)</label><inputid="curl"type="url"name="url"></p><p><labelfor="ccomment">备注 (必需)</label><textareaid="ccomment"name="comment"required></textarea></p><p><inputclass="submit"type="submit"value="Submit"></p></fieldset></form>

2、将校验规则写到 js 代码中

$().ready(function(){// 在键盘按下并释放及提交后验证提交表单$("#signupForm").validate({rules:{firstname:"required",lastname:"required",username:{required:true,minlength:2},password:{required:true,minlength:5},confirm_password:{required:true,minlength:5,equalTo:"#password"},email:{required:true,email:true},topic:{required:"#newsletter:checked",minlength:2},agree:"required"},messages:{firstname:"请输入您的名字",lastname:"请输入您的姓氏",username:{required:"请输入用户名",minlength:"用户名必需由两个字母组成"},password:{required:"请输入密码",minlength:"密码长度不能小于 5 个字母"},confirm_password:{required:"请输入密码",minlength:"密码长度不能小于 5 个字母",equalTo:"两次密码输入不一致"},email:"请输入一个正确的邮箱",agree:"请接受我们的声明",topic:"请选择两个主题"}});

<formclass="cmxform"id="signupForm"method="get"action=""><fieldset><legend>验证完整的表单</legend><p><labelfor="firstname">名字</label><inputid="firstname"name="firstname"type="text"></p><p><labelfor="lastname">姓氏</label><inputid="lastname"name="lastname"type="text"></p><p><labelfor="username">用户名</label><inputid="username"name="username"type="text"></p><p><labelfor="password">密码</label><inputid="password"name="password"type="password"></p><p><labelfor="confirm_password">验证密码</label><inputid="confirm_password"name="confirm_password"type="password"></p><p><labelfor="email">Email</label><inputid="email"name="email"type="email"></p><p><labelfor="agree">请同意我们的声明</label><inputtype="checkbox"class="checkbox"id="agree"name="agree"></p><p><labelfor="newsletter">我乐意接收新信息</label><inputtype="checkbox"class="checkbox"id="newsletter"name="newsletter"></p><fieldsetid="newsletter_topics"><legend>主题 (至少选择两个) - 注意：如果没有勾选“我乐意接收新信息”以下选项会隐藏，但我们这里作为演示让它可见</legend><labelfor="topic_marketflash"><inputtype="checkbox"id="topic_marketflash"value="marketflash"name="topic">Marketflash</label><labelfor="topic_fuzz"><inputtype="checkbox"id="topic_fuzz"value="fuzz"name="topic">Latest fuzz</label><labelfor="topic_digester"><inputtype="checkbox"id="topic_digester"value="digester"name="topic">Mailing list digester</label><labelfor="topic"class="error">Please select at least two topics you'd like to receive.</label></fieldset><p><inputclass="submit"type="submit"value="提交"></p></fieldset></form>

常用方法及注意问题

1、用其他方式替代默认的 SUBMIT

$().ready(function(){$("#signupForm").validate({submitHandler:function(form){alert("提交事件!");form.submit();}});});

$(".selector").validate({submitHandler:function(form){$(form).ajaxSubmit();}})

$.validator.setDefaults({submitHandler:function(form){alert("提交事件!");form.submit();}});

2、debug，只验证不提交表单

$().ready(function(){$("#signupForm").validate({debug:true});});

$.validator.setDefaults({debug:true})

3、ignore：忽略某些元素不验证

ignore:".ignore"

4、更改错误信息显示的位置

errorPlacement：Callback

errorPlacement:function(error,element){error.appendTo(element.parent());}

<p>将错误信息放在 label 元素后并使用 span 元素包裹它</p><formmethod="get"class="cmxform"id="form1"action=""><fieldset><legend>Login Form</legend><p><labelfor="user">Username</label><inputid="user"name="user"requiredminlength="3"></p><p><labelfor="password">Password</label><inputid="password"type="password"maxlength="12"name="password"requiredminlength="5"></p><p><inputclass="submit"type="submit"value="Login"></p></fieldset></form>

errorContainer:"div.error",errorLabelContainer:$("#signupForm div.error"),wrapper:"li"

5、更改错误信息显示的样式

input.error {border:1pxsolid red;}label.error {background:url("./demo/images/unchecked.gif")no-repeat 0px0px;padding-left:16px;padding-bottom:2px;font-weight:bold;color:#EA5200;}label.checked{background:url("./demo/images/checked.gif")no-repeat 0px0px;}

6、每个字段验证通过执行函数

success：String,Callback

success:function(label){// set   as text for IElabel.html(" ").addClass("checked");//label.addClass("valid").text("Ok!")}

success:"valid"

7、验证的触发方式修改

// 重置表单$().ready(function(){varvalidator =$("#signupForm").validate({submitHandler:function(form){alert("submitted");form.submit();}});$("#reset").click(function(){validator.resetForm();});});

8、异步验证

remote：URL

remote:"check-email.php"

remote:{url:"check-email.php",//后台处理程序type:"post",//数据发送方式dataType:"json",//接受数据格式   data:{//要传递的数据username:function(){return$("#username").val();}}}

9、添加自定义校验

addMethod：name,method,message

// 中文字两个字节jQuery.validator.addMethod("byteRangeLength",function(value,element,param){varlength =value.length;for(vari =0;i <value.length;i++){if(value.charCodeAt(i)>127){length++;}}returnthis.optional(element)||(length >=param[0]&&length <=param[1]);},$.validator.format("请确保输入的值在{0}-{1}个字节之间(一个中文字算2个字节)"));// 邮政编码验证   jQuery.validator.addMethod("isZipCode",function(value,element){vartel =/^[0-9]{6}$/;returnthis.optional(element)||(tel.test(value));},"请正确填写您的邮政编码");

10、radio 和 checkbox、select 的验证

<inputtype="radio"id="gender_male"value="m"name="gender"class="{required:true}"/><inputtype="radio"id="gender_female"value="f"name="gender"/>

<inputtype="checkbox"class="checkbox"id="agree"name="agree"class="{required:true}"/>

<inputtype="checkbox"class="checkbox"id="spam_email"value="email"name="spam[]"class="{required:true, minlength:2}"/><inputtype="checkbox"class="checkbox"id="spam_phone"value="phone"name="spam[]"/><inputtype="checkbox"class="checkbox"id="spam_mail"value="mail"name="spam[]"/>

<selectid="jungle"name="jungle"title="Please select something!"class="{required:true}"><optionvalue=""></option><optionvalue="1">Buga</option><optionvalue="2">Baga</option><optionvalue="3">Oi</option></select>

<selectid="fruit"name="fruit"title="Please select at least two fruits"class="{required:true, minlength:2}"multiple="multiple"><optionvalue="b">Banana</option><optionvalue="a">Apple</option><optionvalue="p">Peach</option><optionvalue="t">Turtle</option></select>

jQuery.validate 中文 API

Validator

内置验证方式

validate ()的可选项

$(".selector").validate({debug:true})

$.validator.setDefaults({debug:true})

$(".selector").validate({submitHandler:function(form){$(form).ajaxSubmit();}})

$("#myform").validate({ignore:".ignore"})

$(".selector").validate({rules:{name:"required",email:{required:true,email:true}}})

$(".selector").validate({rules:{name:"required",email:{required:true,email:true}},messages:{name:"Name不能为空",email:{required:"E-mail不能为空",email:"E-mail地址不正确"}}})

$("#myform").validate({groups:{username:"fname
lname"},errorPlacement:function(error,element){if(element.attr("name")=="fname"||element.attr("name")=="lname")error.insertAfter("#lastname");elseerror.insertAfter(element);},debug:true})

$(".selector").validate({onsubmit:false})

$(".selector").validate({onfocusout:false})

$(".selector").validate({onkeyup:false})

$(".selector").validate({onclick:false})

$(".selector").validate({focusInvalid:false})

$(".selector").validate({focusCleanup:true})

$(".selector").validate({errorClass:"invalid"})

$(".selector").validate
errorElement:"em"})

$(".selector").validate({wrapper:"li"})

$("#myform").validate({errorLabelContainer:"#messageBox",wrapper:"li",submitHandler:function(){alert("Submitted!")}})

$(".selector").validate({showErrors:function(errorMap,errorList){$("#summary").html("Your form contains "+this.numberOfInvalids()+" errors,see details below.");this.defaultShowErrors();}})

$("#myform").validate({errorPlacement:function(error,element){error.appendTo(element.parent("td").next("td"));},debug:true})

$("#myform").validate({success:"valid",submitHandler:function(){alert("Submitted!")}})

addMethod(name,method,message)方法

$.validator.addMethod("af",function(value,element,params){if(value.length>1){returnfalse;}if(value>=params[0]&&value<=params[1]){returntrue;}else{returnfalse;}},"必须是一个字母,且a-f");

username:{af:["a","f"]}

meta String 方式

$("#myform").validate({meta:"validate",submitHandler:function(){alert("Submitted!")}})

<scripttype="text/javascript"src="js/jquery.metadata.js"></script><scripttype="text/javascript"src="js/jquery.validate.js"></script><formid="myform"><inputtype="text"name="email"class="{validate:{ required:true,email:true }}"/><inputtype="submit"value="Submit"/></form>