首先引入 vue3,这里是取一个别名方便后续引入
<body> <div id="app"></div> </body> <script type="module"> import * as vue from 'vue' Object.assign(window, vue);// 将vue对象绑定到window对象; const vue3Composition = { setup() {
const { onMounted, onUnmounted, nextTick } = vue
const test = ref(); const func = () => {} return {test, func} } } const app = createApp(vue3Composition ).mount('#app') </script>