I spent a week reading about the Node.js Event Loop. This is everything I found out

The Node.js Event Loop allows JavaScript to manage asynchronous operations, such as timers, API calls, and file reading, despite being a single-threaded language. While often studied as a theoretical concept, its practical application prevents execution blocking, enabling the efficient handling of multiple tasks simultaneously. Understanding this mechanism requires analyzing the call stack, which is the primary location where JavaScript executes code, resolving the apparent contradiction between single-threaded execution and asynchronous capabilities within the environment.