Create a Simple HTTP Server

Question

Create a simple HTTP server in Node.js that listens on port 3000 and returns "Hello World" when accessed in the browser.

Coding Answer

const http = require("http");

const server = http.createServer((req, res) => {
  res.writeHead(200, { "Content-Type": "text/plain" });
  res.end("Hello World");
});

server.listen(3000, () => {
  console.log("Server running at http://localhost:3000");
});

Preview

Open your browser and go to:

http://localhost:3000

👉 Output: Hello World

Explanation

http module is used to create the server
createServer() handles request and response
writeHead() sets status code and headers
end() sends response to client
listen() runs server on port 3000