Bun.js JavaScript 入门指南 - 安装、路由和启动服务器

To use Bun.js in JavaScript, you need to follow these steps:
\

1. Install Bun.js using npm (Node Package Manager) by running the following command in your terminal or command prompt:\

npm install bun\
```\
\
2. Create a new JavaScript file (e.g., `app.js`) and import Bun.js:\
```javascript\
import Bun from 'bun';\
```\
\
3. Create a new instance of Bun:\
```javascript\
const app = new Bun();\
```\
\
4. Define routes and their corresponding handlers using the `app.route()` method:\
```javascript\
app.route('/', (req, res) => {\
  res.send('Hello, world!');\
});\
```\
\
5. Start the server using the `app.listen()` method:\
```javascript\
app.listen(3000, () => {\
  console.log('Server is running on http://localhost:3000');\
});\
```\
\
6. Run your JavaScript file using Node.js by running the following command in your terminal or command prompt:\
```\
node app.js\
```\
\
Now, you should see the server running on `http://localhost:3000` and displaying "Hello, world!" when you visit that URL in your browser.\
\
Note: This is a basic example to get started with Bun.js. You can explore more advanced features and functionalities in the official Bun.js documentation: https://bun.js.org/