你应该了解的jquery 验证框架

Jquery validate 验证

具体查看附件中demo

主要是几种使用形式：

1、写在js中：

$("#signupForm").validate({
		rules: {
			firstname: "required",
			lastname: "required",
		},
		messages: {
			firstname: "Please enter your firstname",
			lastname: "Please enter your lastname",
		}
	});

2、写在标签中：有两种形式

① 如下：（label 标签显示错误信息）简单应用

<label for="cname">Name (required, at least 2 characters)</label>
<input id="cname" name="name" class="required" minlength="2" />

②需要引用jquery.metadata.js 自定义

<input name="user" title="Please enter your username (at least 3 characters)" class="{required:true,minlength:3}" />

另外

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

<input id="cemail" name="email" class="{validate:{required:true, email:true, messages:{required:'Please enter your email address', email:'Please enter a valid email address'}}}"/>

jQuery校验

一导入js库

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

二、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日期校验ie6出错，慎用
(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

三、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，可在js代码中加入：

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")
});

推荐做法，将此文件放入messages_cn.js中，在页面中引入
<script src="../js/messages_cn.js" type="text/javascript"></script>

四、使用方式

1.将校验规则写到控件中

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

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

<form >Turtle</option>
</select>