jQuery校验
官网地址：http://bassistance.de/jquery-plugins/jquery-plugin-validation
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 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>
<p>
<label
for="password">Password</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:'#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：
class="{required:true,minlength:5,messages:{required:'请输入内容'}}"
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'}"
2.将校验规则写到js代码中
$().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
<form id="signupForm" method="get"
action="">
<p>
<label
for="firstname">Firstname</label>
<input id="firstname" name="firstname"
/>
</p>
<p>
<label
for="email">E-Mail</label>
<input
id="email" name="email" />
</p>
<p>
<label
for="password">Password</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="Submit"/>
</p>
</form>
required:true 必须有值
required:"#aa:checked"表达式的值为真，则需要验证
required:function(){}返回为真，表时需要验证
后边两种常用于，表单中需要同时填或不填的元素