oooops.dev

This will start a simple server on port 3000.

Save to a file index.js

var http = require('http');

console.log("Server listening on port 3000");

http.createServer((req, res) => {
  console.log("Got a request");
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.end("Hello World!");
}).listen(3000);

Run with:

$ node index.js

Output:

Server listening on port 3000