jQuery.Validate验证库 --zm2714

jQuery.Validate验证库

1、下载jquery.validate，这里我提供jquery-validation-1.9.0，点击下载

默认校验规则

(1)required:true               必输字段
(2)remote:"check.php"          使用ajax方法调用check.php验证输入值
(3)email:true                  必须输入正确格式的电子邮件
(4)url:true                    必须输入正确格式的网址
(5)date:true                   必须输入正确格式的日期
(6)dateISO:true                必须输入正确格式的日期(ISO)，例如：2009-06-23，1998/01/22 只验证格式，不验证有效性
(7)number:true                 必须输入合法的数字(负数，小数)
(8)digits:true                 必须输入整数
(9)creditcard:                 必须输入合法的信用卡号
(10)equalTo:"#field"           输入值必须和#field相同
(11)accept:                    输入拥有合法后缀名的字符串（上传文件的后缀）
(12)maxlength:5                输入长度最多是5的字符串(汉字算一个字符)
(13)minlength:10               输入长度最小是10的字符串(汉字算一个字符)
(14)rangelength:[5,10]         输入长度必须介于 5 和 10 之间的字符串")(汉字算一个字符)
(15)range:[5,10]               输入值必须介于 5 和 10 之间
(16)max:5                      输入值不能大于5
(17)min:10                     输入值不能小于10

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，将以下js代码保存为：messages_cn.js，并在页面中引用：

"JavaScript" type="text/JavaScript" src="messages_cn.js">

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")
});

使用方式

1、将校验规则写到控件中

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script language="JavaScript" type="text/JavaScript" src="jquery-1.6.1.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.validate.min.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.metadata.js">script>

<script>
$().ready(function() {
  $("#signupForm").validate();
});
script>

<form id="signupForm" method="get" action="">
    <p>
        <label for="firstname">Firstnamelabel>
        <input id="firstname" name="firstname" class="required" />
    p>
 <p>
  <label for="email">E-Maillabel>
  <input id="email" name="email" class="required email" />
 p>
 <p>
  <label for="password">Passwordlabel>
  <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 

<input id="firstname" name="firstname" class="{required:true,minlength:5,messages:{required:'请输入内容'}}" />

上面代码表示：如果firstname域不填写任何内容，则提示：请输入内容。那么，如果填写的内容长度小于5的话，提示用户，该如何写呢？请看下面代码：

<input id="firstname" name="firstname" class="{required:true,minlength:5,messages:{required:'请输入内容',minlength:'字符串长度不能小于5'}}" />

注意：在使用equalTo关键字时，后面的内容必须加上引号，如下代码：

class="{required:true,minlength:5,equalTo:'#password'}"

另外一个方式，使用关键字：meta

例如，将上面示例中的代码改为关键字meta形式，代码如下：

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script language="JavaScript" type="text/JavaScript" src="jquery-1.6.1.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.validate.min.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.metadata.js">script>

<script>
$().ready(function() {
  $("#signupForm").validate({meta: "validate"});
});
script>

<form id="signupForm" method="get" action="">
    <p>
        <label for="firstname">Firstnamelabel>
    <input id="firstname" name="firstname" class="{validate:{required:true,minlength:5,messages:{required:'请输入内容',minlength:'字符串长度不能小于5'}}}" />
 <p>
  <label for="email">E-Maillabel>
  <input id="email" name="email" class="{validate:{required:true, email:true}}" />
 p>
 <p>
  <label for="password">Passwordlabel>
  <input id="password" name="password" type="password" class="{validate:{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="{validate:{required:true,minlength:5,equalTo:'#password'}}" />
 p>
    <p>
        <input class="submit" type="submit" value="Submit"/>
    p>
form>

注意：

规则部分应用完整形式，如下所示：

正确写法：

<input id="email" name="email" class="{validate:{required:true, email:true}}" />

错误写法：

<input id="email" name="email" class="{validate:{required email}}" />

再有一种方式

$.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 

例如，将上面示例代码改为：

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script language="JavaScript" type="text/JavaScript" src="jquery-1.6.1.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.validate.min.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.metadata.js">script>

<script>
$().ready(function() {
  $.metadata.setType("attr", "validate");
  $("#signupForm").validate();
});
script>

<form id="signupForm" method="get" action="">
    <p>
        <label for="firstname">Firstnamelabel>
    <input id="firstname" name="firstname" validate="{required:true}" />
 <p>
  <label for="email">E-Maillabel>
  <input id="email" name="email" validate="{required:true, email:true}" />
 p>
 <p>
  <label for="password">Passwordlabel>
  <input id="password" name="password" type="password" validate="{required:true,minlength:5}" />
 p>
 <p>
  <label for="confirm_password">确认密码label>
  <input id="confirm_password" name="confirm_password" type="password" validate="{required:true,minlength:5,equalTo:'#password'}" />
 p>
    <p>
        <input class="submit" type="submit" value="Submit"/>
    p>
form>

注意：规则部分应用完整形式，即

正确写法：

<input id="email" name="email" validate="{required:true, email:true}" />

错误写法：

<input id="email" name="email" validate="{required email}" />

2、将校验规则写到代码中

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script language="JavaScript" type="text/JavaScript" src="jquery-1.6.1.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.validate.min.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.metadata.js">script>
<script>
$().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
script>
<form id="signupForm" method="get" action="">
    <p>
        <label for="firstname">Firstnamelabel>
        <input id="firstname" name="firstname" />
    p>
 <p>
  <label for="email">E-Maillabel>
  <input id="email" name="email" />
 p>
 <p>
  <label for="password">Passwordlabel>
  <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"id名称为aa的dom被选中时，则需要验证

required:function(){} 返回为真，表示需要验证（仅针对required有效，其它无效。）

后边两种常用于，表单中需要同时填或不填的元素

下面针对上面三项内容，通过实例来说明一下，更易于理解。（第一个说明：required:true 必须有值 这项就不在举例了，通过上面的示例，已经非常清楚。）

required:"#aa:checked" 的示例如下：

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script language="JavaScript" type="text/JavaScript" src="jquery-1.6.1.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.validate.min.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.metadata.js">script>
<script>
$().ready(function() {
  $("#signupForm").validate({
    rules:
    {
      firstname: "required",
      email:
      {
        required: "#open:checked",
        email: true
      }
    },
    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"
      }
    }
  });
});
//messages处，如果某个控件没有message，将调用默认的信息
script>
<form id="signupForm" method="get" action="">
    <p>
        开关：
        <input id="open" name="open" type="radio" />
        <label for="open">打开label>
        <input id="close" name="close" type="radio" />
        <label for="close">关闭label>
    p>
    <p>
      <label for="email">E-Maillabel>
      <input id="email" name="email" />
    p>
    <p>
        <input class="submit" type="submit" value="Submit"/>
    p>
form>

当选中“打开”时，则对email进行验证。

required:function(){}的示例如下：

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script language="JavaScript" type="text/JavaScript" src="jquery-1.6.1.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.validate.min.js">script>
<script language="JavaScript" type="text/JavaScript" src="jquery.metadata.js">script>
<script>
$().ready(function() {
  $("#signupForm").validate({
    rules:
    {
      firstname: "required",
      email:
      {
        required: function()
        {
          return true;
        },
        email: function()
        {
          return false;
        }
      }
    },
    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"
      }
    }
  });
});
//messages处，如果某个控件没有message，将调用默认的信息
script>
<form id="signupForm" method="get" action="">
    <p>
        开关：
        <input id="open" name="open" type="radio" />
        <label for="open">打开label>
        <input id="close" name="close" type="radio" />
        <label for="close">关闭label>
    p>
    <p>
      <label for="email">E-Maillabel>
      <input id="email" name="email" />
    p>
    <p>
        <input class="submit" type="submit" value="Submit"/>
    p>
form>

经过测试得知，即使 email:function(){return false}); 是返回false，但是 required:function(){return true;}，是返回true，那么，除了验证是否为空外，还验证email格式。也就是说 email:function(){reuturn false;}设置无效。进一步测试，去掉 required:function(){return true;}，只保留：email:function(){reuturn false;}，仍然验证email格式。代码如下：

$("#signupForm").validate({
  rules:
  {
    firstname: "required",
    email:
    {
      email: function()
      {
        return false;
      }
    }
  },
  messages:
  ......

注意：将校验规则单独写在文件中，如上面例子中的rules规则中的firstname，email等，问题是，在input中有id，又有name属性，那JQuery Validation获取哪个呢？通过测试，是获取name属性的。所以，rules中的key，是input的name属性值，而不是id属性值。

定义样式代码

/* jQuery.Validate css */
input.error{border: 1px dotted red;}
label.error{
  background-image:url('del.gif');
  background-repeat:no-repeat;
  padding-left:18px;
  color: red;
}

input.error 定义input控件样式

label.error 定义出错信息的样式

如下图所示：