请使用Nodejs写一个监听80端口的方法

"```javascript const http = require('http');

const server = http.createServer((req, res) => { res.writeHead(200, {'Content-Type': 'text/plain'}); res.write('Hello, World!'); // 返回响应内容 res.end(); // 结束响应 });

server.listen(80, 'localhost', () => { console.log('Server is running on http://localhost:80/'); });