jquery-validation.js验证插件使用详解

2020-12-16  本文已影响0人  靓仔001

一、用前必备

官方网站

API

<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  
(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

五、常用方法及注意问题

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

可以设置validate的默认值,写法如下:

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

如果想提交表单, 需要使用form.submit()而不要使用$(form).submit()

​ 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

```html

<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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