What is the event loop in Node.js? The event loop is the core of Node.js's non-blocking I/O operations. It handles all

synchronous operations in a single thread, constantly checking for events (e.g., incoming

data, timers) and executing associated callbacks.

📌 Example:

setTimeout(() => {

console.log('Executed after 2 seconds');

}, 2000);

This callback is scheduled by the event loop and executed when the time is up.