Vue3 Element-Plus 文本框与按钮交互示例：点击按钮设置文本框内容为123

<template>
  <div>
    <el-input v-model='inputValue' />
    <el-button @click='handleClick'>设置为123</el-button>
  </div>
</template>
<script setup>
  import { ref } from 'vue';
  const inputValue = ref('');

  function handleClick() {
    inputValue.value = '123';
  }
</script>