按需导入导出
export 关键字导出
import 关键字导入
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<h1>{{msg}}</h1><!--{{差值表达式}}-->
</div>
<!--引入vue模块-->
<script type="module">
import {createApp} from 'https://unpkg.com/vue@3/dist/vue.esm-browser.js';
/* 创建vue 的应用实例*/
createApp({
data(){
return {
msg:'hello vue3'
}
}
}).mount("#app")
</script>
</body>
</html>