Node.js 8000포트로 연결되는 server installed 있을까?

 

npm install express

const express = require('express');
const app = express();
const port = 8000;

app.get('/', (req, res) => {
  res.send('Hello, world!');
});

app.listen(port, () => {
  console.log(`Server is running on http://localhost:${port}`);
});

node server.js