使用vue中的混入mixin优化表单验证插件问题

import Vue from 'vue'
export default {
 install: (Vue, options) => {
 Vue.directive('validateParams', {
  inserted: function (el, binding, vNode) {
  /*
  * 解决办法只需添加下面这一行代码即可
  * el即为当前指令绑定的元素，classList.add可以给元素添加类名
  */
  el.classList.add('v-check');
  el.addEventListener('blur', function (event) {
   // ...
  })
  }
 });
 }
}

// mixin.ts
import { Component, Vue } from 'vue-property-decorator';
@Component({})
export class Demo extends Vue {
 public A: string = 'A';
 public doSomething () {
 }
}
// component
<template>
</template>
<script lang="ts">
import { Component, Vue, Mixins } from 'vue-property-decorator';
import { Demo } from 'mixin.ts';
@Component({})
export class App extends Mixins(Demo) {
 private created() {
 console.log(this.A); // 会打印出A
 }
}
</script>

@Component({})
export class ValidatorMixin extends Vue {
 /*
 * 定义一个GValidate方法，可以接受一个元素节点参数
 * 参数定义了表单函数校验的范围
 */
 public GValidate(validateEl?: HTMLElement) {
 // 默认是查找当前组件实例内的.v-check元素，this.$el表示当前组件
 let elements = this.$el.querySelectorAll('.v-check');
 if ( validateEl ) {
  // 有参数时，规定了校验的范围
  elements = validateEl.querySelectorAll('.v-check');
 }
 const evObj = document.createEvent('Event');
 evObj.initEvent('blur', true, true);
 if (elements) {
  for (const element of elements) {
  element.dispatchEvent(evObj);
  }
 }
 // 还是查找.input-error元素，以此来判断检验结果
 let errorInputs = this.$el.querySelectorAll('.input-error');
 if (validateEl) {
  errorInputs = validateEl.querySelectorAll('.input-error');
 }
 // 将校验的结果返回
 if (errorInputs.length !== 0) {
  return false;
 } else {
  return true;
 }
 }
}

// rules.ts
export const required = (message) => ({
 message,
 required: true
});
export const min = (message, length=3) => ({
 message,
 min: length
})
export const max = (message, length=15) => ({
 message,
 max: length
})
export const pattern = (message, reg) => ({
 message,
 pattern: reg
})
// form.vue
<template>
 <div>
 <div class="form-item" ref="userName">
  <label for="userEmail">用户名：</label>
  <input id="userEmail" type="text" v-model="userName"
  v-validateParams="[inputNameRequired, inputNameMin, inputNameMax, inputNamePattern]">
 </div>
 <button class="btn" type="success" @click="submit">确认</button>
 </div>
</template>
<script lang='ts'>
import { Component, Vue, Prop, Mixins } from 'vue-property-decorator';
import { max, min, required, name, pattern} from 'rules';
import { yourMixin } from 'yourMixin.ts';
@Component({})
export default class Auth Mixins(youMixin) {
 private userName: string = '';
 private inputNameMax = max('请不要超过20个字符');
 private inputNameMin = min('请不要小于3个字符');
 private inputNameRequired = required('请输入用户名');
 private inputNamePattern = pattern('请输入符合要求的用户名', /^[a-zA-Z0-9_-]{4,16}$/);
 private submit() {
 const validRes = this.GValidate(); // 全局校验
 const userNameValidRes = this.GValidate(this.$refs.userName); // 单独校验某个表单
 if (validRes && userNameValidRes) {
  alert('通过校验');
 } else {
  alert('校验失败');
 }
 }
}
</script>