jQuery Validate verification framework classic encyclopedia

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1. Import the js library

<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>

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Note: <%=request.getContextPath() %> Returns the root path of the web project.

2. Default verification rules

(1), required:true .jsp" Use the ajax method to call remote-valid.jsp to verify the input value
(3), email:true You must enter the email in the correct format
(4), url:true You must enter the URL in the correct format
(5), date:true You must enter the date in the correct format, date verification ie6 has an error, use with caution
(6), dateISO:true You must enter the date (ISO) in the correct format, for example: 2009-06-23 , 1998/01/22 The verification format, without verification effectiveness
(7), Number: True must enter legal numbers (negative, decimal)
(8), digits: true must enter an integer
(9), creditcard: true You must enter a legal credit card number
(10), equalTo: "#password" The input value must be the same as #password
(11), accept: Enter a string with a legal suffix (Suffix for uploaded files)
(12), maxlength:5 Enter a string with a maximum length of 5 (Chinese characters count as one character)
(13), minlength:10 Enter a string with a minimum length of 10 (Chinese characters) Counted as one character)
(14), rangelength:[5,10] The input length must be a string between 5 and 10") (Chinese characters counted as one character)
(15), range:[5 ,10] The input value must be between 5 and 10
(16), max:5 The input value cannot be greater than 5
(17), min:10 The input value cannot be less than 10

3. Default prompt

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}.")
},

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If you need to modify it, you can add it in the js code:

$.extend($.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")
});

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Recommended practice is to put this file into messages_cn.js and introduce

<script type="text/javascript" src="<%=path %>/validate/messages_cn.js"></script>

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4. Usage

1. Metadata usage, write the verification rules into the control

<%@ 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:&#39;#password&#39;}" />
      </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>

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To use class="{}", the package must be imported: jquery.metadata.js;

You can use the following method to modify the prompt content: class="{ required:true,minlength:5,messages:{required:'Please enter the content'}}";

When using the equalTo keyword, the following content must be enclosed in quotation marks, as shown in the following code: class="{ required:true,minlength:5,equalTo:'#password'}".

2. Write the verification rules into js code

<%@ 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</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">
    $(function(){
      var validate = $("#myform").validate({
        debug: true, //调试模式取消submit的默认提交功能  
        //errorClass: "label.error", //默认为错误的样式类为：error  
        focusInvalid: false, //当为false时，验证无效时，没有焦点响应 
        onkeyup: false,  
        submitHandler: function(form){  //表单提交句柄,为一回调函数，带一个参数：form  
          alert("提交表单");  
          form.submit();  //提交表单  
        },  
        rules:{
          myname:{
            required:true
          },
          email:{
            required:true,
            email:true
          },
          password:{
            required:true,
            rangelength:[3,10]
          },
          confirm_password:{
            equalTo:"#password"
          }          
        },
        messages:{
          myname:{
            required:"必填"
          },
          email:{
            required:"必填",
            email:"E-Mail格式不正确"
          },
          password:{
            required: "不能为空",
            rangelength: $.format("密码最小长度:{0}, 最大长度:{1}。")
          },
          confirm_password:{
            equalTo:"两次密码输入不一致"
          }                  
        }
      });  
    });
    </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" />
      </p>
      <p>
        <label for="email">E-Mail：</label>
        <input id="email" name="email" />
      </p>
      <p>
        <label for="password">登陆密码：</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="立即注册" />
      </p>
    </form>
  </body>
</html>

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5. Common methods and issues to pay attention to

1. Use other methods to replace the default submit

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

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You can set validate The default value is written as follows:

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

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If you want to submit the form, you need to use form.submit() instead of $(form).submit( )

2. Debug, only verify and not submit the form

If this parameter is true, then the form will not be submitted, but only checked, which is very convenient for debugging

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

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If there are multiple forms on a page that you want to set as debug, use

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

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3. ignore: ignore certain elements and do not verify

ignore: ".ignore"

4、更改错误信息显示的位置

errorPlacement：Callback

Default: 把错误信息放在验证的元素后面
指明错误放置的位置，默认情况是：error.appendTo(element.parent());即把错误信息放在验证的元素后面

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

//示例
<tr>
  <td class="label"><label id="lfirstname" for="firstname">First Name</label></td>
  <td class="field"><input id="firstname" name="firstname" type="text" value="" maxlength="100" /></td>
  <td class="status"></td>
</tr>
<tr>
  <td style="padding-right: 5px;">
    <input id="dateformat_eu" name="dateformat" type="radio" value="0" />
    <label id="ldateformat_eu" for="dateformat_eu">14/02/07</label>
  </td>
  <td style="padding-left: 5px;">
    <input id="dateformat_am" name="dateformat" type="radio" value="1" />
    <label id="ldateformat_am" for="dateformat_am">02/14/07</label>
  </td>
  <td></td>
</tr>
<tr>
  <td class="label"> </td>
  <td class="field" colspan="2">
    <p id="termswrap">
      <input id="terms" type="checkbox" name="terms" />
      <label id="lterms" for="terms">I have read and accept the Terms of Use.</label>
    </p>
  </td>
</tr>

errorPlacement: function(error, element) {
  if (element.is(":radio"))
    error.appendTo(element.parent().next().next());
  else if (element.is(":checkbox"))
    error.appendTo(element.next());
  else
    error.appendTo(element.parent().next());
}

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代码的作用是：一般情况下把错误信息显示在中，如果是radio显示在中，如果是checkbox显示在内容的后面

errorClass：String Default: "error"

指定错误提示的css类名，可以自定义错误提示的样式

errorElement：String Default: "label"

用什么标签标记错误，默认的是label你可以改成em

errorContainer：Selector

显示或者隐藏验证信息，可以自动实现有错误信息出现时把容器属性变为显示，无错误时隐藏，用处不大

errorContainer: "#messageBox1, #messageBox2"

errorLabelContainer：Selector

把错误信息统一放在一个容器里面。

wrapper：String

用什么标签再把上边的errorELement包起来

一般这三个属性同时使用，实现在一个容器内显示所有错误提示的功能，并且没有信息时自动隐藏

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

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5、更改错误信息显示的样式

设置错误提示的样式，可以增加图标显示，在该系统中已经建立了一个validation.css专门用于维护校验文件的样式

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

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6、每个字段验证通过执行函数

success：String,Callback

要验证的元素通过验证后的动作，如果跟一个字符串，会当做一个css类，也可跟一个函数

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

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添加"valid"到验证元素, 在CSS中定义的样式

success: "valid"

7、验证的触发方式修改

下面的虽然是boolean型的，但建议除非要改为false,否则别乱添加。

a.onsubmit：Boolean Default: true

提交时验证. 设置唯false就用其他方法去验证

b.onfocusout：Boolean Default: true

失去焦点是验证(不包括checkboxes/radio buttons)

c.onkeyup：Boolean Default: true

在keyup时验证.

d.onclick：Boolean Default: true

在checkboxes 和 radio 点击时验证

e.focusInvalid：Boolean Default: true

提交表单后，未通过验证的表单(第一个或提交之前获得焦点的未通过验证的表单)会获得焦点

f.focusCleanup：Boolean Default: false

如果是true那么当未通过验证的元素获得焦点时，移除错误提示。避免和focusInvalid一起用

8、异步验证

remote：URL

使用ajax方式进行验证，默认会提交当前验证的值到远程地址，如果需要提交其他的值，可以使用data选项

示例一：

remote: "check-email.php"

示例二：

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();
    }
  }
}

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远程地址只能输出"true"或"false"，不能有其它输出。

9、添加自定义校验

addMethod：name, method, message

自定义验证方法

// 中文字两个字节
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]);  
  }, 
  $.validator.format("请确保输入的值在{0}-{1}个字节之间(一个中文字算2个字节)")
);
// 邮政编码验证  
jQuery.validator.addMethod("isZipCode", function(value, element) {  
  var tel = /^[0-9]{6}$/;
  return this.optional(element) || (tel.test(value));
}, "请正确填写您的邮政编码");

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1.要在additional-methods.js文件中添加或者在jquery.validate.js添加

建议一般写在additional-methods.js文件中

2.在messages_cn.js文件添加：isZipCode: "只能包括中文字、英文字母、数字和下划线",调用前要添加对additional-methods.js文件的引用。

10、radio和checkbox、select的验证

1.radio的required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"/>

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2.checkbox的required表示必须选中

<input type="checkbox" class="checkbox" id="agree" name="agree" class="{required:true}" />
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[]" />

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3.select的required表示选中的value不能为空

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

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select的minlength表示选中的最小个数（可多选的select）,maxlength表示最大的选中个数,rangelength:[2,3]表示选中个数区间

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

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