关于vue.js:P24-vue3-组合式api语法糖

• App.vue

<script setup>import Content from "./components/Content.vue";</script><template>  <div>    <Content />  </div></template>

定义相应式变量还是须要vue引入

<script setup>import Content from "./components/Content.vue";import { ref } from "vue";const b=ref(100000)const a=20;console.log(a);</script><template>  <div>    <h2>{{a}}</h2>    <h2>{{b}}</h2>    <Content />  </div></template>