jquery 表單驗證

<script src="../js/jquery.js" type="text/javascript"></script>

<script src="../js/jquery.validate.js" type="text/javascript"></script>

(1)required:true               必輸字段

(2)remote:"check.php"          使用ajax方法調用check.php驗證輸入值

(3)email:true                  必須輸入正确格式的電子郵件

(4)url:true                    必須輸入正确格式的網址

(5)date:true                   必須輸入正确格式的日期 日期校驗ie6出錯，慎用

(6)dateISO:true                必須輸入正确格式的日期(ISO)，例如：2009-06-23，1998/01/22 隻驗證格式，不驗證有效性

(7)number:true                 必須輸入合法的數字(負數，小數)

(8)digits:true                 必須輸入整數

(9)creditcard:                 必須輸入合法的信用卡号

(10)equalTo:"#field"           輸入值必須和#field相同

(11)accept:                    輸入擁有合法字尾名的字元串（上傳檔案的字尾）

(12)maxlength:5                輸入長度最多是5的字元串(漢字算一個字元)

(13)minlength:10               輸入長度最小是10的字元串(漢字算一個字元)

(14)rangelength:[5,10]         輸入長度必須介于 5 和 10 之間的字元串")(漢字算一個字元)

(15)range:[5,10]               輸入值必須介于 5 和 10 之間

(16)max:5                      輸入值不能大于5

(17)min:10                     輸入值不能小于10

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代碼中加入：

jQuery.extend(jQuery.validator.messages, {

        required: "必選字段",

  remote: "請修正該字段",

  email: "請輸入正确格式的電子郵件",

  url: "請輸入合法的網址",

  date: "請輸入合法的日期",

  dateISO: "請輸入合法的日期 (ISO).",

  number: "請輸入合法的數字",

  digits: "隻能輸入整數",

  creditcard: "請輸入合法的信用卡号",

  equalTo: "請再次輸入相同的值",

  accept: "請輸入擁有合法字尾名的字元串",

  maxlength: jQuery.validator.format("請輸入一個 長度最多是 {0} 的字元串"),

  minlength: jQuery.validator.format("請輸入一個 長度最少是 {0} 的字元串"),

  rangelength: jQuery.validator.format("請輸入 一個長度介于 {0} 和 {1} 之間的字元串"),

  range: jQuery.validator.format("請輸入一個介于 {0} 和 {1} 之間的值"),

  max: jQuery.validator.format("請輸入一個最大為{0} 的值"),

  min: jQuery.validator.format("請輸入一個最小為{0} 的值")

});

推薦做法，将此檔案放入messages_cn.js中，在頁面中引入

<script src="../js/messages_cn.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>

  <label for="password">Password</label>

  <input id="password" name="password" type="password" class="{required:true,minlength:5}" />

  <label for="confirm_password">确認密碼</label>

  <input id="confirm_password" name="confirm_password" type="password" class="{required:true,minlength:5,equalTo:'#password'}" />

        <input class="submit" type="submit" value="Submit"/>

</form>

使用class="{}"的方式，必須引入包：jquery.metadata.js

可以使用如下的方法，修改提示内容：

class="{required:true,minlength:5,messages:{required:'請輸入内容'}}"

在使用equalTo關鍵字時，後面的内容必須加上引号，如下代碼：

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

 $("#signupForm").validate({

        rules: {

   firstname: "required",

   email: {

    required: true,

    email: true

   },

   password: {

    minlength: 5

   confirm_password: {

    minlength: 5,

    equalTo: "#password"

   }

  },

        messages: {

   firstname: "請輸入姓名",

    required: "請輸入Email位址",

    email: "請輸入正确的email位址"

    required: "請輸入密碼",

    minlength: jQuery.format("密碼不能小于{0}個字 符")

    required: "請輸入确認密碼",

    minlength: "确認密碼不能小于5個字元",

    equalTo: "兩次輸入密碼不一緻不一緻"

  }

    });

//messages處，如果某個控件沒有message，将調用預設的資訊

        <input id="firstname" name="firstname" />

  <input id="email" name="email" />

  <input id="password" name="password" type="password" />

  <input id="confirm_password" name="confirm_password" type="password" />

required:true 必須有值

required:"#aa:checked"表達式的值為真，則需要驗證

required:function(){}