<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app">
<h1>{{msg}}</h1>
<async-item></async-item>
</div>
<script src="js/vue.3.2.2.js"></script>
<script>
// 1、创建Vue的实例对象
const app = Vue.createApp({
data(){//定义数据
return {
msg:'你好！'
}
}
});
app.component('async-item',Vue.defineAsyncComponent(()=>{
return new Promise((resolve, reject)=>{
setTimeout(()=>{
resolve({
template:'<div style="background-color: red;height: 200px;height: 200px;">test_resolve_msg</div>'
})
},3000)
})
}));
app.mount('#app');
</script>
</body>
</html>
