1. 这里是 Vue 学习笔记¶

<template>
  <div>
    <div>{{obj.name}}</div>
    <div>{{obj.age}}</div>
    <button @click="changeName">改变值</button>
  </div>
</template>

<script>
import { reactive, watch } from 'vue';
export default {
  setup(){
    const obj = reactive({
      name:'zs',
      age:14
    });
    const changeName = () => {
      obj.name = 'ls';
    };
    watch(() => obj.name,() => {
      console.log('监听的obj.name改变了')
    })
    return {
      obj,
      changeName,
    }
  }
}
</script>