VeeValidate 的使用场景以及配置详解

创建vue项目:

vue init webpack vee

cd ./vee 

npm run dev
 
# or
yarn run dev

安装 VeeValidate

npm install vee-validate --save
# or
yarn add vee-validate --save

本文中使用的 VeeValidate 版本为 2.1.5

在 App.vue 中引入

import VeeValidate from 'vee-validate';

Vue.use(VeeValidate);

例子

第一个测试例子

<template>
 <div class="test1">
 <div>
  <input
  type="text"
  name="nickname"
  v-model="formData.nickname"
  v-validate="'required|min:3|max:10'"
  >
  <p>{{errors.first('nickname')}}</p>
 </div>
 <div>
  <button @click="handleSubmit">Submit</button>
 </div>
 </div>
</template>

<script>
 export default {
 name: "test1",
 data() {
  return {
  formData: {
   nickname: '',
   password: '',
  }
  }
 },
 methods: {
  handleSubmit() {
  this.$validator.validate()
   .then((valid) => {
   if (true === valid) {
    console.log('验证通过');
   } else {
    console.log(this.$validator.errors.all());
   }
   })
  }
 }
 }
</script>

<style scoped lang="css">
 .test1 {
 width: 900px;
 margin: 0 auto;
 }
</style>

更多配置请参考官网!

我们只是用些常用配置和常用的验证!

中文配置

全局配置

import VeeValidate, {Validator} from 'vee-validate';
import zh_CN from 'vee-validate/dist/locale/zh_CN';
Vue.use(VeeValidate, {
 dictionary: {
 zh_CN: zh_CN
 }
});
Validator.localize('zh_CN');

这样就可以使用中文提示了!

自定义错误提示

<template>
 <div class="test2">
 <div><input type="text" v-model="formData.nickname" data-vv-name="nickname" v-validate="'required|min:3|max:10'">
 </div>
 <div>{{errors.first('nickname')}}</div>
 <div><input type="text" v-model="formData.password" data-vv-name="password" v-validate="'required|min:5|max:200'">
 </div>
 <div>{{errors.first('password')}}</div>
 <div>
  <button @click="handleSubmit">Submit</button>
 </div>
 </div>
</template>

<script>
 const validate = {
 custom: {
  nickname: {
  required: () => '昵称不得为空', //写法1
  min: "昵称不得小于3个字符", //写法2
  max: () => '昵称不得大于10个字符'
  },
  password: {
  required: () => '密码不得为空',
  min: "密码不得小于5个字符",
  max: () => '密码不得大于200个字符'
  }
 },
 };

 export default {
 name: "test2",
 data() {
  return {
  formData: {
   nickname: '',
   password: '',
  }
  }
 },
 methods: {
  handleSubmit() {
  this.$validator.validate()
   .then((valid) => {
   if (true === valid) {
    console.log('验证通过');
   } else {
    console.log(this.$validator.errors.all());
   }
   })
  }
 },
 mounted() {
  this.$validator.localize('zh_CN', validate);
 }
 }
</script>

自定义验证规则

<template>
 <div class="test2">
 <div><input type="text" v-model="formData.nickname" data-vv-name="nickname" v-validate="'required|min:3|max:10'">
 </div>
 <div>{{errors.first('nickname')}}</div>
 <div><input type="text" v-model="formData.password" data-vv-name="password" v-validate="'required|min:5|max:200'">
 </div>
 <div>{{errors.first('password')}}</div>
 <div><input type="text" v-model="formData.re_password" data-vv-name="re_password"
    v-validate="'required|confirm'">
 </div>
 <div>{{errors.first('re_password')}}</div>
 <div><input type="text" v-model="formData.mobile" data-vv-name="mobile" v-validate="'required|mobile'">
 </div>
 <div>{{errors.first('mobile')}}</div>
 <div>
  <button @click="handleSubmit">Submit</button>
 </div>
 </div>
</template>

<script>
 const validate = {
 custom: {
  nickname: {
  required: () => '昵称不得为空', //写法1
  min: "昵称不得小于3个字符", //写法2
  max: () => '昵称不得大于10个字符'
  },
  password: {
  required: () => '密码不得为空',
  min: "密码不得小于5个字符",
  max: () => '密码不得大于200个字符'
  },
  re_password: {
  required: () => '请再次输入密码!',
  },
  mobile: {
  required: () => '请输入手机号码!',
  }
 },
 };

 export default {
 name: "test3",
 data() {
  return {
  formData: {
   nickname: '',
   password: '',
   re_password: '',
   mobile: ''
  }
  }
 },
 methods: {
  handleSubmit() {
  this.$validator.validate()
   .then((valid) => {
   if (true === valid) {
    console.log('验证通过');
   } else {
    console.log(this.$validator.errors.all());
   }
   })
  }
 },
 mounted() {
  this.$validator.localize('zh_CN', validate);
  this.$validator.extend('mobile', {
  getMessage: field => '手机号有误',
  validate: value => {
   return /^((13|14|15|17|18)[0-9]{1}\d{8})$/.test(value)
  }
  })
  this.$validator.extend('confirm', {
  getMessage: field => '两次密码输入不一致',
  validate: value => {
   return value === this.formData.password
  }
  })
 }
 }
</script>

显示第一个错误!

有时候我们需要在弹出层中提示用户 所以要显示第一个错误

this.$validator.errors.items[0].msg

例子 发验证码和注册!

这个例子中发验证码是一个验证 注册又是一个验证 所以有点意义!

在发送验证码的时候需要验证手机号码和图形验证码 注册的时候需要验证除图形验证码之外的数据

template

<template>
 <div class="reg">
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="mobile"
   data-vv-name="mobile"
   v-model="mobile"
   v-validate="'required|mobile'"
   placeholder="手机号码"
  >
  </div>
  <div class="err">{{errors.first('mobile')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   v-model="img_captcha"
   name="img_captcha"
   placeholder="图形验证码"
   v-validate="'required'"
  >
  </div>
  <div class="err">{{errors.first('img_captcha')}}</div>
 </div>
 <div class="form_item">
  <div class="input send_sms">
  <input
   type="text"
   v-validate="'required|length:6'"
   v-model="sms_captcha"
   name="sms_captcha"
   placeholder="短信验证码"
  >
  <button class="send_sms_btn" @click="handleSendSms">获取验证码</button>
  </div>
  <div class="err">{{errors.first('sms_captcha')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="password"
   v-validate="'required|min:8'"
   v-model="password"
   placeholder="登录密码"
   ref="password"
  >
  </div>
  <div class="err">{{errors.first('password')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="re_password"
   v-validate="'required|confirmed:password'"
   v-model="re_password"
   placeholder="再次输入登录密码"
  ></div>
  <div class="err">{{errors.first('re_password')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="nickname"
   v-validate="'required|min:3|max:10'"
   v-model="nickname"
   placeholder="请输入昵称"
  ></div>
  <div class="err">{{errors.first('nickname')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="id_card"
   v-validate="'required|id_card'"
   v-model="id_card"
   placeholder="请输入身份证号码"
  ></div>
  <div class="err">{{errors.first('id_card')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="date"
   name="birthday"
   v-validate="'required|date_format:YYYY-MM-DD'"
   v-model="birthday"
   placeholder="请输入生日"
  ></div>
  <div class="err">{{errors.first('birthday')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="url"
   v-validate="'required|url'"
   v-model="url"
   placeholder="请输入个人网址"
  ></div>
  <div class="err">{{errors.first('url')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="email"
   v-validate="'required|email'"
   v-model="email"
   placeholder="请输入电子邮箱"
  ></div>
  <div class="err">{{errors.first('email')}}</div>
 </div>
 <div class="form_item">
  <div class="input">
  <input
   type="text"
   name="age"
   v-validate="'required|between:18,60'"
   v-model="age"
   placeholder="请输入年龄"
  ></div>
  <div class="err">{{errors.first('age')}}</div>
 </div>
 <div class="form_item">
  <button class="reg_btn" @click="handleSubmit">注册</button>
 </div>

 </div>
</template>

style 代码(这个是随便写的 原生css大家不要吐槽哈)

<style>
 .err {
 color: red;
 font-size: 12px;
 text-align: left;
 }

 .reg {
 width: 500px;
 margin: 0 auto;
 }

 .send_sms {
 position: relative;
 }

 .send_sms_btn {
 position: absolute;
 width: 100px;
 height: 30px;
 right: -11px;
 top: 2px;
 cursor: pointer;
 border: none;
 border-radius: 4px;
 background-color: #e4393c;
 outline: none;
 color: #fff;
 }

 .form_item {
 margin-bottom: 10px;
 width: 400px;
 }

 input {
 width: 400px;
 height: 30px;
 border: 1px solid #999;
 border-radius: 4px;
 outline: none;
 padding-left: 10px;
 }

 .reg_btn {
 width: 100px;
 height: 30px;
 border: none;
 border-radius: 4px;
 background-color: #e4393c;
 outline: none;
 cursor: pointer;
 color: #fff;
 }
</style>

js

<script>
 import {messages} from '../validate/reg'

 export default {
 name: "reg",
 data() {
  return {
  url: '',
  age: '',
  email: '',
  birthday: '',
  id_card: '',
  nickname: '',
  mobile: '',
  img_captcha: '',
  sms_captcha: '',
  password: '',
  re_password: '',
  }
 },
 mounted() {
  this.$validator.localize('zh_CN', messages);
  this.$validator.extend('mobile', {
  getMessage: field => '手机号有误',
  validate: value => {
   return /^((13|14|15|17|18)[0-9]{1}\d{8})$/.test(value)
  }
  });
  this.$validator.extend('id_card', {
  getMessage: field => '身份证号码格式有误',
  validate: value => {
   return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/.test(value)
  }
  });
 },
 methods: {
  handleSubmit() {
  this.$validator.errors.clear();
  this.$validator.validateAll({
   mobile: this.mobile,
   password: this.password,
   sms_captcha: this.sms_captcha,
   re_password: this.re_password,
   url: this.url,
   age: this.age,
   email: this.email,
   birthday: this.birthday,
   id_card: this.id_card,
   nickname: this.nickname,
  }).then((valid) => {
   console.log(valid);
   if (true === valid) {
   console.log('验证通过');
   } else {
   console.log(this.$validator.errors.all());
   }
  });
  },
  handleSendSms() {
  this.$validator.errors.clear();
  this.$validator.validateAll({
   mobile: this.mobile,
   img_captcha: this.img_captcha
  }).then((valid) => {
   console.log(valid);
   if (true === valid) {
   console.log('验证通过');
   } else {
   console.log(this.$validator.errors.all());
   }
  });
  }
 }
 }
</script>

外部引入的js (自定义提示内容)

export const messages = {
 custom: {
 mobile: {
  required: () => '请输入手机号码!',
  mobile: () => '手机号码有误',
 },
 img_captcha: {
  required: () => '请输入图形验证码!',
 },
 sms_captcha: {
  required: () => '请输短信验证码!',
  length: () => '短信验证码为6位数字'
 },
 password: {
  required: () => '密码不得为空',
  min: () => '密码不得小于8个字符',
 },
 re_password: {
  required: () => '请再次输入密码!',
  confirmed: () => '两次密码输入不一致'
 },
 nickname: {
  required: () => '请输入昵称',
  min: () => '昵称最小为3位字符',
  max: (field, params) => {
  return `昵称最大为${params[0]}位字符`;
  }
 },
 id_card: {
  required: "身份证号码不得为空"
 },
 birthday: {
  required: "请选择出生日期",
  date_format: "出生日期有误"
 },
 url: {
  required: () => "请输入个人网址",
  url: () => "网址输入有误"
 },
 email: {
  required: () => "请输入电子邮箱",
  email: () => "电子邮箱输入有误"
 },
 age: {
  required: () => "请输入年龄",
  between: () => "年龄必须在18-60岁之间"
 }
 },
};

扩展内容

自定义错误信息中显示配置验证规则中的参数

export const messages = {
 custom: {
 nickname: {
  required: () => "请输入年龄",
  between: (fiield,params) => `年龄必须在${params[0]}-${params[1]}岁之间"
 }
 },
};

规则里面第一个参数是字段名称 第二个参数是验证规则后面的参数;

验证指定字段

validateAll(field Object) 
validateAll({mobile:this.moble});

还可以使用 data-vv-scope 来指定 但是该方法并不适用一些场景;

显示错误信息的时候必须要指定scope的值 不然不会显示错误信息

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持三水点靠木。