node/doc/api/synopsis.markdown

# Synopsis

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An example of a [web server][] written with Node.js which responds with
`'Hello World'`:

```js
const http = require('http');

http.createServer( (request, response) => {
  response.writeHead(200, {'Content-Type': 'text/plain'});
  response.end('Hello World\n');
}).listen(8124);

console.log('Server running at http://127.0.0.1:8124/');
```

To run the server, put the code into a file called `example.js` and execute
it with the node program

```
$ node example.js
Server running at http://127.0.0.1:8124/
```

All of the examples in the documentation can be run similarly.

[web server]: http.html