node简单使用（一）

参考：https://nodejs.org/docs/latest-v14.x/api/synopsis.html

新建hello-world.js

const http = require('http');

const hostname = '127.0.0.1';
const port = 3000;

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

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

运行

node hello-world.js

浏览器打开
http://127.0.0.1:3000/