index.html


<div id="app">
<blog-post title="My journey with Vue"></blog-post>
<blog-post title="Blogging with Vue"></blog-post>
<blog-post title="Why Vue is so fun"></blog-post>
</div>

main.ts
```typescript
import { createApp } from 'vue'
import App from './App.vue'

createApp(App)
.component('blog-post', {
props: ['title'],
template: `<h4>{{ title }}</h4>`
})
.mount('#app'

```

生气了，今天晚上连接断断续续的，累计连上时间最多半小时