VUE3+Element Plus的el-input获取焦点

<template>
  <el-input
    v-model="msg"
    id="inputbox"
    type="text"
    style="width: 500px"
  />
  <el-button @click="handleGetFocus">获取焦点</el-button>
</template>
<script setup lang="ts">
  import { ref } from "vue";
  let msg = ref("获取焦点")
  
  const handleGetFocus = () => {
    document.getElementById("inputbox")?.focus();
  }
</script>