vue3.0 项目中 el-select ios 无法唤起软键盘解决

main.js

import { createApp } from 'vue'
import App from './App.vue'
import router from './router'
import store from './store'
const app = createApp(App)

app.mixin({
  mounted () {
    if (typeof this.$el.className === 'string') {
      if (this.$el.className.split(' ').indexOf('el-select') !== -1) {
        this.$el.children[0].children[0].children[0].removeAttribute('readOnly')
        this.$el.children[0].children[0].children[0].onblur = function () {
          let _this = this
          setTimeout(() => {
            _this.removeAttribute('readOnly')
          }, 200)
        }
      }
    }
  }
})