很多新手在搭建vue环境时都很困难，花了很多时间去搭建，要想不花大力气也有方法，只需要复制黏贴一个script：
<script src="https://unpkg.com/vue@next"></script>
那我们看下效果：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://unpkg.com/vue@next"></script>
</head>
<body>
<div id="app">
<h1>{{message}}</h1>
</div>
<script>
const App = {
data(){
return{
message:"hello Vue3.0"
}
}
}
Vue.createApp(App).mount("#app")
</script>
</body>
</html>
