 
					函数式编程
					只需为该事件添加一个回调处理程序,例如:this.$refs.select.onClick((e) => {  });完整示例var app = new Vue({  el: '#app',  vuetify: new Vuetify(),  data: {    currencySelect: ['a', 'b', 'c']  },  methods: {    click_select() {      this.$refs.select.onClick((e) => {      });    }  }})<link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900" rel="stylesheet"><link href="https://cdn.jsdelivr.net/npm/@mdi/font@5.x/css/materialdesignicons.min.css" rel="stylesheet"><link href="https://cdn.jsdelivr.net/npm/vuetify@2.x/dist/vuetify.min.css" rel="stylesheet"><script src="https://cdn.jsdelivr.net/npm/vue@2.x/dist/vue.js"></script><script src="https://cdn.jsdelivr.net/npm/vuetify@2.x/dist/vuetify.js"></script><div id="app">  <v-app id="inspire">    <button @click='click_select' class="v-btn-primary">    select    </button>    <v-select :items="currencySelect" ref='select' />  </v-app></div>