Home > Web Front-end > JS Tutorial > jquery.validate form validation plug-in usage analysis

jquery.validate form validation plug-in usage analysis

高洛峰
Release: 2016-12-07 14:24:03
Original
1219 people have browsed it

为什么要用jquery validate这个表单验证插件:自己写一个通用且功能全面强大的jquery表单验证插件并不容易。jquery validate这个jquery插件几乎可以轻松应对95%以上的表单验证,具体内容如下

使用方式

1、在控件中使用默认验证规则,例子:
电子邮件(必填) 

2、可以在控件中自定义验证规则,例子:
自定义(必填,[3,5])

<input id="complex" value="hi" class="{required:true,minlength:3, maxlength:5,
messages:{required:&#39;为什么不输入一点文字呢&#39;,minlength:&#39;输入的太少了&#39;,maxlength:&#39;输入那么多干嘛&#39;}}" />
Copy after login

3、通过javascript自定义验证规则,下面的JS自定义了两个规则,password和confirm_password

$().ready(function() {
 $("#form2").validate({
 rules: {
  password: {
  required: true,
  minlength: 5
  },
  confirm_password: {
  required: true,
  minlength: 5,
  equalTo: "#password"
  }
 },
 messages: {
  password: {
  required: "没有填写密码",
  minlength: jQuery.format("密码不能小于{0}个字符")
  },
  confirm_password: {
  required: "没有确认密码",
  minlength: "确认密码不能小于{0}个字符",
  equalTo: "两次输入密码不一致嘛"
  }
 }
 });
});
Copy after login

required除了设置为true/false之外,还可以使用表达式或者函数,比如

$("#form2").validate({
 rules: {
 funcvalidate: {
 required: function() {return $("#password").val()!=""; }
 }
 },
 messages: {
 funcvalidate: {
 required: "有密码的情况下必填"
 }
 }
});
Copy after login

Html

密码<input id="password" name="password" type="password" />
确认密码<input id="confirm_password" name="confirm_password" type="password" />
条件验证<input id="funcvalidate" name="funcvalidate" value="" />
Copy after login

4、使用meta自定义验证信息

首先用JS设置meta

$("#form3").validate({ meta: "validate" });

Html

email<input class="{validate:{required:true, email:true,
messages:{required:&#39;输入email地址&#39;, email:&#39;你输入的不是有效的邮件地址&#39;}}}"/>
Copy after login

5、使用meta可以将验证规则写在自定义的标签内,比如validate

JS设置meta

$().ready(function() {
 $.metadata.setType("attr", "validate");
 $("#form1").validate();
});
Copy after login

Html

Email

<input id="email" name="email" validate="{required:true, email:true, messages:{required:&#39;输入email地址&#39;, email:&#39;你输入的不是有效的邮件地址&#39;}}" />
Copy after login

6、自定义验证规则

对于复杂的验证,可以通过jQuery.validator.addMethod添加自定义的验证规则

官网提供的additional-methods.js里包含一些常用的验证方式,比如lettersonly,ziprange,nowhitespace等

例子

// 字符验证 
jQuery.validator.addMethod("userName", function(value, element) {
 return this.optional(element) || /^[\u0391-\uFFE5\w]+$/.test(value);
}, "用户名只能包括中文字、英文字母、数字和下划线"); 
 
//然后就可以使用这个规则了
$("#form1").validate({
 // 验证规则
 rules: {
 userName: {
  required: true,
  userName: true,
  rangelength: [5,10]
 }
 },
 /* 设置错误信息 */
 messages: {
 userName: {
  required: "请填写用户名",
  rangelength: "用户名必须在5-10个字符之间"
 }  
 },
});
Copy after login

7、radio、checkbox、select的验证方式类似

radio的验证

性别
<span>
 男<input type="radio" id="gender_male" value="m" name="gender" class="{required:true}"/><br />
 女<input type="radio" id="gender_female" value="f" name="gender" />
</span>
Copy after login

checkbox的验证

最少选择两项

<span>
 选项1<input type="checkbox" id="check_1" value="1" name="checkGroup"
 class="{required:true,minlength:2, messages:{required:&#39;必须选择&#39;,minlength:&#39;至少选择2项&#39;}}" /><br />
 选项2<input type="checkbox" id="check_2" value="2" name="checkGroup" /><br />
 选项3<input type="checkbox" id="check_3" value="3" name="checkGroup" /><br />
</span>
Copy after login

select的验证

下拉框

<span>
 <select id="selectbox" name="selectbox" class="{required:true}">
 <option value=""></option>
 <option value="1">1</option>
 <option value="2">2</option>
 <option value="3">3</option>
 </select>
</span>
Copy after login

8、Ajax验证

用remote可以进行Ajax验证

remote: {
url: "url", //url地址
type: "post",  //发送方式
dataType: "json", //数据格式 data: {   //要传递的数据
 username: function() {
 return $("#username").val();
 }}
}
Copy after login

验证用户多种信息:

<script type="text/javascript"></script>
// 手机号码验证
jQuery.validator.addMethod("mobile", function(value, element) {
 var length = value.length;
 var mobile = /^(((13[0-9]{1})|(15[0-9]{1}))+\d{8})$/
 return this.optional(element) || (length == 11 && mobile.test(value));
}, "手机号码格式错误");
 
// 电话号码验证
jQuery.validator.addMethod("phone", function(value, element) {
 var tel = /^(0[0-9]{2,3}\-)?([2-9][0-9]{6,7})+(\-[0-9]{1,4})?$/;
 return this.optional(element) || (tel.test(value));
}, "电话号码格式错误");
 
// 邮政编码验证
jQuery.validator.addMethod("zipCode", function(value, element) {
 var tel = /^[0-9]{6}$/;
 return this.optional(element) || (tel.test(value));
}, "邮政编码格式错误");
 
// QQ号码验证
jQuery.validator.addMethod("qq", function(value, element) {
 var tel = /^[1-9]\d{4,9}$/;
 return this.optional(element) || (tel.test(value));
}, "qq号码格式错误");
 
// IP地址验证
jQuery.validator.addMethod("ip", function(value, element) {
 var ip = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
 return this.optional(element) || (ip.test(value) && (RegExp.$1 < 256 && RegExp.$2 < 256 && RegExp.$3 < 256 && RegExp.$4 < 256));
}, "Ip地址格式错误");
 
// 字母和数字的验证
jQuery.validator.addMethod("chrnum", function(value, element) {
 var chrnum = /^([a-zA-Z0-9]+)$/;
 return this.optional(element) || (chrnum.test(value));
}, "只能输入数字和字母(字符A-Z, a-z, 0-9)");
 
// 中文的验证
jQuery.validator.addMethod("chinese", function(value, element) {
 var chinese = /^[\u4e00-\u9fa5]+$/;
 return this.optional(element) || (chinese.test(value));
}, "只能输入中文");
 
// 下拉框验证
$.validator.addMethod("selectNone", function(value, element) {
 return value == "请选择";
}, "必须选择一项");
 
// 字节长度验证
jQuery.validator.addMethod("byteRangeLength", function(value, element, param) {
 var length = value.length;
 for (var i = 0; i < value.length; i++) {
 if (value.charCodeAt(i) > 127) {
  length++;
 }
 }
 return this.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)"));
Copy after login

    

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template