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Detailed example of jQuery form validation plug-in validate_jquery

WBOYOriginal: 2016-05-16 15:19:371326browse

The validate plug-in is a form validation plug-in based on jquery. There are many commonly used verification methods that we can call directly. Let’s take a look at the details.

Example, html code

<!DOCTYPE html>
<html lang="en">
<head>
<include file="Common/Header" />
<meta charset="utf-8">
<script src="/jquery.min.js"></script>
</head>
<body>
<form class="form-horizontal" id="form" onsubmit="return false;">
<input type="text" name="password_old" class="form-control required" id="password_old" maxlength="20">
<input type="password" name="pay_password" class="form-control required" id="pay_password">
<input type="password" name="password_Repeat" class="form-control required" id="password_Repeat">
<button type="submit" id="submit" class="btn btn-success btn-padding-lr-30 margin-right-15">确定</button>
</form>
</body>
<!------------------------------------------------------------------------->
<script src="jquery.validate.min.js"></script>
<script src="messages_cn.js"></script>
<script type="text/javascript">
$(document).ready(function(){
//提交
$('#submit').click(function(){
var pay_password = $('#pay_password').val();
var password_Repeat = $('#password_Repeat').val();
var password_old = $('#password_old').val(); 
var data = {
'pay_password':pay_password,
'password_Repeat':password_Repeat,
'password_old':password_old
};
console.info(data);
var v = $('#form').validate({
rules : {
pay_password : {
required : true,
minlength : 6,
ismypassword : true
},
password_Repeat : {
required : true,
minlength : 6,
ismypassword : true
},
password_old : {
required : true,
minlength : 6,
}
},
messages : {
pay_password : {
required : "请输入密码",
minlength : "字符长度不能小于6个字符",
ismypassword : "密码必须由数字、英文字母和特殊字符(!,.@#$%^&*&#63;_~)组成"
},
password_Repeat : {
required : "请输入密码",
minlength : "字符长度不能小于6个字符",
ismypassword : "密码必须由数字、英文字母和特殊字符(!,.@#$%^&*&#63;_~)组成"
},
password_old : {
required : "请输入密码",
minlength : "字符长度不能小于6个字符",
},
}
});
if(pay_password != password_Repeat){
alert("密码不一致，请重新输入确认！");return false;
}
//---------------------------------
if(!v.form())return false;
$.ajax({
url:'{:U("Merchant/ajax_pw")}',
data: data,
beforeSend:function(){
},
success:function(res){ 
if(res == 1){
alert("密码修改成功");
}
if(res == 0){
alert("两次密码一样，未做修改");
} 
if(res != 0 && res != 1){
alert(res);
} 
}
});
//------------------------
});
})
</script>
</html>

messages_cn.js file is as follows

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")
});

Detailed explanation about the validator plug-in

Mainly divided into several parts

Basic usage of jquery.validate
jquery.validate API Description
jquery.validate custom
jquery.validate Common types of validation codes

Download address

Document address of jquery.validate plug-in

http://docs.jquery.com/Plugins/Validation

Home page of jquery.validate plug-in

http://bassistance.de/jquery-plugins/jquery-plugin-validation/

Demo provided on the jquery.validate plugin homepage

http://jquery.bassistance.de/validate/demo/

Validation Rules

The following are the default verification rules, you can also customize the rules

(1)required:true required field
(2)remote:"check.php" Use the ajax method to call check.php to verify the input value
(3)email:true You must enter an email in the correct format
(4)url:true You must enter the URL in the correct format
(5)date:true You must enter the date in the correct format
(6)dateISO:true You must enter the date (ISO) in the correct format, for example: 2009-06-23, 1998/01/22 Only the format is verified, not the validity
(7)number:true You must enter a legal number (negative number, decimal)
(8)digits:true must enter an integer
(9)creditcard: A legal credit card number must be entered
(10)equalTo:"#field" The input value must be the same as #field
(11)accept: Enter a string with a legal suffix (the suffix of the uploaded file)
(12)maxlength:5 Enter a string with a maximum length of 5 (Chinese characters count as one character)
(13)minlength:10 Enter a string with a minimum length of 10 (Chinese characters count as one character)
(14)rangelength:[5,10] The input length must be a string between 5 and 10") (Chinese characters count as one character)
(15)range:[5,10] The input value must be between 5 and 10
(16)max:5 The input value cannot be greater than 5
(17)min:10 The input value cannot be less than 10

Verification prompt

The following is the default verification prompt. The official website has a simplified Chinese version of the verification prompt for download, or you can customize the error prompt message through jQuery.extend(jQuery.validator.messages to unify the website's verification prompt text into one file.

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).",
number: "Please enter a valid number.",
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}.")

How to use

1：

Use default validation rules in controls, example:

Email (required)

<input id="email" class="required email" value="email@" />

You can customize validation rules in the control, example:

Customized (required, [3,5])

<input id="complex" value="hi" class="{required:true,minlength:3, maxlength:5,
messages:{required:'为什么不输入一点文字呢',minlength:'输入的太少了',maxlength:'输入那么多干嘛'}}" />

Customize verification rules through javascript. The following JS customizes two rules, password and confirm_password

$().ready(function() {
$("#form2").validate({
rules: {
password: {
required: true,
minlength: 5
},
confirm_password: {
required: true,
minlength: 5,
equalTo: "#password"
}
},
messages: {
password: {
required: "没有填写密码",
minlength: jQuery.format("密码不能小于{0}个字符")
},
confirm_password: {
required: "没有确认密码",
minlength: "确认密码不能小于{0}个字符",
equalTo: "两次输入密码不一致嘛"
}
}
});
});

In addition to setting true/false,

required can also use expressions or functions, such as

$("#form2").validate({
rules: {
funcvalidate: {
required: function() {return $("#password").val()!=""; }
}
},
messages: {
funcvalidate: {
required: "有密码的情况下必填"
}
}
});

Html

密码<input id="password" name="password" type="password" />
确认密码<input id="confirm_password" name="confirm_password" type="password" />
条件验证<input id="funcvalidate" name="funcvalidate" value="" />

4：

Use meta to customize verification information

First set meta with JS

$("#form3").validate({ meta: "validate" });

Html

email<input class="{validate:{required:true, email:true,
messages:{required:'输入email地址', email:'你输入的不是有效的邮件地址'}}}"/>

Use meta to write validation rules in custom tags, such as validate

JS setting meta

$().ready(function() {
$.metadata.setType("attr", "validate");
$("#form1").validate();
});

Html

<input id="email" name="email"
validate="{required:true, email:true, messages:{required:'输入email地址', email:'你输入的不是有效的邮件地址'}}" />

Custom validation rules

For complex validation, you can add custom validation rules through jQuery.validator.addMethod

The additional-methods.js provided by the official website contains some commonly used verification methods, such as lettersonly, ziprange, nowhitespace, etc.

Example

// 字符验证 
jQuery.validator.addMethod("userName", function(value, element) {
return this.optional(element) || /^[\u0391-\uFFE5\w]+$/.test(value);
}, "用户名只能包括中文字、英文字母、数字和下划线"); 
//然后就可以使用这个规则了
$("#form1").validate({
// 验证规则
rules: {
userName: {
required: true,
userName: true,
rangelength: [5,10]
}
},
/* 设置错误信息 */
messages: {
userName: {
required: "请填写用户名",
rangelength: "用户名必须在5-10个字符之间"
} 
},
});

The verification methods for radio, checkbox, and select are similar

radio verification

Gender

<span>
男<input type="radio" id="gender_male" value="m" name="gender" class="{required:true}"/><br />
女<input type="radio" id="gender_female" value="f" name="gender" />
</span>

Checkbox verification

Choose at least two items

<span>
选项1<input type="checkbox" id="check_1" value="1" name="checkGroup"
class="{required:true,minlength:2, messages:{required:'必须选择',minlength:'至少选择2项'}}" /><br />
选项2<input type="checkbox" id="check_2" value="2" name="checkGroup" /><br />
选项3<input type="checkbox" id="check_3" value="3" name="checkGroup" /><br />
</span>

Select verification

Drop-down box

<span>
<select id="selectbox" name="selectbox" class="{required:true}">
<option value=""></option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
</span>

Ajax validation

Using remote for Ajax verification

remote: {
url: "url", //url地址
type: "post", //发送方式
dataType: "json", //数据格式 data: { //要传递的数据
username: function() {
return $("#username").val();
}}
}

Plugin methods

Name Type

validate( options ) Returns: Validator

验证所选的FORM

valid( ) Returns: Boolean

检查是否验证通过

rules( ) Returns: Options

返回元素的验证规则

rules( "add", rules ) Returns: Options

增加验证规则

rules( "remove", rules ) Returns: Options

删除验证规则

removeAttrs( attributes ) Returns: Options

删除特殊属性并且返回他们

Custom selectors
Name Type

:blank Returns: Array cbd130a6998a818057c3a15187d5c580
没有值的筛选器

:filled Returns: Array cbd130a6998a818057c3a15187d5c580
有值的筛选器

:unchecked Returns: Array cbd130a6998a818057c3a15187d5c580
没选择的元素的筛选器
Utilities

Name Type

jQuery.format( template, argument , argumentN... ) Returns: String
用参数代替模板中的 {n}。
Validator

validate方法返回一个Validator对象, 它有很多方法，让你能使用引发校验程序或者改变form的内容.

下面只是列出常用的.

form( ) Returns: Boolean
验证form返回成功还是失败

element( element ) Returns: Boolean
验证单个元素是成功还是失败

resetForm( ) Returns: undefined
把前面验证的FORM恢复到验证前原来的状态

showErrors( errors ) Returns: undefined
显示特定的错误信息
built-in Validation methods

Name Type

setDefaults( defaults ) Returns: undefined
改变默认的设置

addMethod( name, method, message ) Returns: undefined
添加一个新的验证方法. 必须包括名字，一个JAVASCRIPT方法和一个默认的信息

addClassRules( name, rules ) Returns: undefined
增加组合验证类型

addClassRules( rules ) Returns: undefined
增加组合验证类型
built-in Validation methods

Name Type

required( ) Returns: Boolean
必填验证元素

required( dependency-expression ) Returns: Boolean
必填元素依赖于表达式的结果.

required( dependency-callback ) Returns: Boolean
必填元素依赖于回调函数的结果.

remote( url ) Returns: Boolean
请求远程校验。url通常是一个远程调用方法

minlength( length ) Returns: Boolean
设置最小长度

maxlength( length ) Returns: Boolean
设置最大长度

rangelength( range ) Returns: Boolean
设置一个长度范围[min,max]

min( value ) Returns: Boolean
设置最小值.

max( value ) Returns: Boolean
设置最大值.

range( range ) Returns: Boolean
设置值的范围

email( ) Returns: Boolean
验证电子邮箱格式

url( ) Returns: Boolean
验证连接格式

date( ) Returns: Boolean
验证日期格式(类似30/30/2008的格式，不验证日期准确性只验证格式)

dateISO( ) Returns: Boolean
研制ISO类型的日期格式

dateDE( ) Returns: Boolean
验证德式的日期格式（29.04.1994 or 1.1.2006）

number( ) Returns: Boolean
验证十进制数字（包括小数的）

numberDE( ) Returns: Boolean
Makes the element require a decimal number with german format.

digits( ) Returns: Boolean
验证整数

creditcard( ) Returns: Boolean
验证信用卡号

accept( extension ) Returns: Boolean
验证相同后缀名的字符串

equalTo( other ) Returns: Boolean
验证两个输入框的内容是否相同

自定义jquery-validate的验证行为

1: 自定义表单提交

设置submitHandler来自定义表单提交动作

$(".selector").validate({
submitHandler: function(form) { alert("验证通过"); }
});

如果需要提交表单，可以调用
form.submit(); 或者$(form).ajaxSubmit();

2: 调试模式

将debug设置为true，表单不会提交，只进行检查，方便调试

$(".selector").validate({
debug: true
})

3: 设置validate的默认值

使用setDefaults可以设置validate的默认值，比如默认所有表单验证都是在debug模式下进行

$.validator.setDefaults({
debug: true
})

4: 某些元素不验证

设置ignore属性可以忽略某些元素不验证

$(".selector").validate({
ignore: "ignore"
})

5: 验证时机

jquery.validate可以很方便的设置在什么时候触发验证动作

onsubmit: 提交时是否验证

$(".selector").validate({
onsubmit: false
})

onfocusout: 失去焦点时验证(checkboxes/radio除外)

$(".selector").validate({
onfocusout: false
})

onkeyup: 在keyup时验证

$(".selector").validate({
onkeyup: false
})

onclick: 在checkboxes、radio点击时验证.

$(".selector").validate({
onclick: false
})

6: 重写验证规则和验证提示信息

//重写max的的验证提示信息
$.validator.messages.max = jQuery.format("Your totals musn't exceed {0}!");
//重写equal方法
$.validator.methods.equal = function(value, element, param) {
return value == param;
};

7: focusInvalid 是否把焦点聚焦在最后一个动作或者最近的一次出错上

$(".selector").validate({
focusInvalid: false
})

8: focusCleanup

如果该属性设置为True, 那么控件获得焦点时，移除出错的class定义，隐藏错误信息，避免和 focusInvalid.一起用。

$(".selector").validate({
focusCleanup: true
})

9: meta

设置meta来封装验证规则

$(".selector").validate({
meta: "validate",
})
<script type="text/javascript"></script>

自定义错误消息的显示方式

默认情况下，验证提示信息用label元素来显示, 并且会添加css class, 通过css可以很方便设置出错控件以及错误信息的显示方式。

/* 输入控件验证出错*/
form input.error { border:solid 1px red;}
/* 验证错误提示信息*/
form label.error{width: 200px;margin-left: 10px; color: Red;}

如果想自定义显示方式，可以修改jquery.validate的默认显示方式

默认用label显示错误消息，可以通过errorElement属性来修改
errorElement: 错误消息的html标签

$(".selector").validate
errorElement: "em"
})

可以在出错信息外用其他的元素包装一层。
wrapper: 错误消息的外层封装html标签

$(".selector").validate({
wrapper: "li"
})

验证出错的css class默认是error，通过errorClass可以修改
errorClass: 验证出错时使用的css class

$(".selector").validate({
errorClass: "invalid"
})

还自定义验证成功时的动作
success: 如果值是字符串，会当做一个css类，如果是一个函数，则执行该函数

$(".selector").validate({
success: "valid"
})

或者

success: function(label) {
label.html(" ").addClass("checked");
}

还可以把错误消息统一到一个容器显示
errorLabelContainer: 将错误消息统一到一个容器显示

$("#myform").validate({
errorLabelContainer: "#messageBox"
})

默认情况下，错误消息是放在验证元素后面的，可以自定义错误消息的显示位置

$(".selector").validate({
errorPlacement: function(error, element) {
error.appendTo( element.parent("td").next("td") );
}
})

更进一步可以定义一个组，把几个地方的出错信息统一放在一个地方，用error Placement控制把出错信息放在哪里
groups：定义一个组

$(".selector").validate({
groups: {
username: "fname lname"
},
errorPlacement: function(error, element) {
if (element.attr("name") == "fname" || element.attr("name") == "lname" )
error.insertAfter("#lastname");
else
error.insertAfter(element);
}
})

高亮显示

highlight: 高亮显示，默认是添加errorClass
unhighlight: 和highlight对应，反高亮显示

$(".selector").validate({
highlight: function(element, errorClass) {
$(element).addClass(errorClass);
$(element.form).find("label[for=" + element.id + "]").addClass(errorClass);
},
unhighlight: function(element, errorClass) {
$(element).removeClass(errorClass);
$(element.form).find("label[for=" + element.id + "]").removeClass(errorClass);
}
});

或者可以完全自定义错误显示
showErrors: 得到错误的显示句柄

$(".selector").validate({
showErrors: function(errorMap, errorList) {
$("#summary").html("Your form contains " + this.numberOfInvalids()
+ " errors, see details below.");
this.defaultShowErrors();
}
})
<script type="text/javascript"></script>
// 手机号码验证
jQuery.validator.addMethod("mobile", function(value, element) {
var length = value.length;
var mobile = /^(((13[0-9]{1})|(15[0-9]{1}))+\d{8})$/
return this.optional(element) || (length == 11 && mobile.test(value));
}, "手机号码格式错误"); 
// 电话号码验证 
jQuery.validator.addMethod("phone", function(value, element) {
var tel = /^(0[0-9]{2,3}\-)&#63;([2-9][0-9]{6,7})+(\-[0-9]{1,4})&#63;$/;
return this.optional(element) || (tel.test(value));
}, "电话号码格式错误");
// 邮政编码验证 
jQuery.validator.addMethod("zipCode", function(value, element) {
var tel = /^[0-9]{6}$/;
return this.optional(element) || (tel.test(value));
}, "邮政编码格式错误");
// QQ号码验证 
jQuery.validator.addMethod("qq", function(value, element) {
var tel = /^[1-9]\d{4,9}$/;
return this.optional(element) || (tel.test(value));
}, "qq号码格式错误");
// IP地址验证
jQuery.validator.addMethod("ip", function(value, element) {
var ip = /^(&#63;:(&#63;:25[0-5]|2[0-4][0-9]|[01]&#63;[0-9][0-9]&#63;)\.){3}(&#63;:25[0-5]|2[0-4][0-9]|[01]&#63;[0-9][0-9]&#63;)$/;
return this.optional(element) || (ip.test(value) && (RegExp.$1 < 256 && RegExp.$2 < 256 && RegExp.$3 < 256 && RegExp.$4 < 256));
}, "Ip地址格式错误");
// 字母和数字的验证
jQuery.validator.addMethod("chrnum", function(value, element) {
var chrnum = /^([a-zA-Z0-9]+)$/;
return this.optional(element) || (chrnum.test(value));
}, "只能输入数字和字母(字符A-Z, a-z, 0-9)");
// 中文的验证
jQuery.validator.addMethod("chinese", function(value, element) {
var chinese = /^[\u4e00-\u9fa5]+$/;
return this.optional(element) || (chinese.test(value));
}, "只能输入中文");
// 下拉框验证
$.validator.addMethod("selectNone", function(value, element) {
return value == "请选择";
}, "必须选择一项");
// 字节长度验证
jQuery.validator.addMethod("byteRangeLength", function(value, element, param) {
var length = value.length;
for (var i = 0; i < value.length; i++) {
if (value.charCodeAt(i) > 127) {
length++;
}
}
return this.optional(element) || (length >= param[0] && length <= param[1]);
}, $.validator.format("请确保输入的值在{0}-{1}个字节之间(一个中文字算2个字节)"));

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