// server.js
const http = require("http");
const server = http.createServer((req, res) => {
res.statusCode = 200;
res.setHeader("Content-Type", "text/plain");
res.end("Hello from Node.js!\n");
});
server.listen(3000, () => {
console.log("Server running at http://localhost:3000/");
});
// Run with: node server.js, then visit http://localhost:3000/