Nodejs构建服务器

// server.js
const { createServer } = require('node:http');

const hostname='127.0.0.1'; // IP地址
const port=3000;  // 端口

const server = createServer((req,res) => {
    res.statusCode=200;  // 状态
    res.setHeader('Content-Type','text/plain');
    res.end('Hello World');
});

server.listen(port,hostname,()=>{
    console.log(`Server running at http://${hostname}:${port}/`);
})