Inside the Event Loop: How JavaScript Handles Concurrency

This post breaks down one of the most misunderstood parts of JavaScript. It explains how the call stack, callback queue, and microtask queue work together to create the illusion of parallel execution in a single-threaded environment. The article walks through real examples like setTimeout, promises, and async/await, helping readers understand why certain code behaves unexpectedly and how to write more predictable asynchronous logic.