What is Node.js?

Node.js is a runtime environment that allows you to execute JavaScript outside the browser.

It uses:

1. V8 Engine (Chrome’s engine)
2. Event-driven architecture
3. Non-blocking I/O

🌐 Create a Basic HTTP Server:

const http = require("http");
const server = http.createServer((req, res) => {
  if (req.url === "/") {
    res.write("Home Page");
  } else if (req.url === "/about") {
    res.write("About Page");
  } else {
    res.write("404 Not Found");
  }
  res.end();
});
server.listen(3000, () => {
  console.log("Server running on http://localhost:3000");
});

Node.js is a powerful tool that allows you to build backend systems using JavaScript.