关于vue使用验证器: VeeValidate3

cnpm install vee-validate --save

import { extend, ValidationObserver, ValidationProvider, localize } from 'vee-validate'import { required, email, min, between, numeric } from 'vee-validate/dist/rules'import zh_CN from 'vee-validate/dist/locale/zh_CN.json';localize('zh_cn',zh_CN) // 配置中文export default {
  install (Vue) {
    Vue.component('ValidationObserver', ValidationObserver)
    Vue.component('ValidationProvider', ValidationProvider)
    extend('required', required)
    extend('email', email)
    extend('min', min)
    extend('between', between)
    extend('numeric', numeric)
    extend('phone', {
      message: '请输入11位的手机号码',
      validate: value => value.length === 11 && /^1[3456789]\d{9}$/.test(value)
    })
  }}

import Validate from './vee-validate'Vue.use(Validate)

<template>

 <ValidationObserver ref="form">

 <form @submit.prevent="handleAddAddress">

  <!-- 要验证的输入框 -->
 <ValidationProvider rules="required|phone" v-slot="{ errors }" name="手机号码">
  <input type="text" v-model="phone" />
     {{ errors[0] }} <!-- 错误信息显示 -->
 </ValidationProvider><button type="submit">确认</button>
 </form>

 </ValidationObserver></template>

 methods:{

      async checkValid () { // 是否验证通过
        return this.$refs.form.validate();
      },
      async handleAddAddress(e){
        let check = await this.checkValid();
        if(! check) // 验证不通过
        {
          let errors = Object.values(this.$refs.form.errors);
          let first_error_index = errors.findIndex(val => val.length >= 1);
          alert(errors[first_error_index][0])
        }    
        // 弹出请输入11位的手机号码

        ......
    }

this.$refs.form.validate()是一个promise,当然你也可以用then