const http = require('http');

const server = http.createServer();

server.listen(3000,()=>{
  console.log("hello");
})

const http = require('http');

✅ This line imports Node.js’s built-in http module, which provides everything you need to create an HTTP server.

require('http') gives you an object with methods like http.createServer().

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const server = http.createServer();

✅ This line creates a new HTTP server instance.

http.createServer() returns a server object that can listen for incoming HTTP requests.

Since you didn’t provide a callback here (e.g., (req, res) => {}), the server won’t respond to requests properly — it will still accept connections, but any client request will just hang because there’s no handler sending a response.

✅ Normally, you’d want to do:

server.listen(3000, () => { console.log("hello"); });

✅ This line tells the server to start listening for incoming connections on port 3000.

3000 is the TCP port your server will bind to.

The callback () => { console.log("hello"); } runs once the server is successfully listening.

So when you see hello printed to your terminal, it means your server is up and ready.

🔎 Summary of what your code does: 1️⃣ Loads the HTTP module. 2️⃣ Creates an HTTP server with no request handler. 3️⃣ Starts the server on port 3000, printing hello to the console when it’s ready.

🚨 Important note: Your current server will accept connections but not respond to HTTP requests, because you didn’t pass a handler to createServer().

✅This now creates a server with basic functionality.