AlexWebLab

Explore a wide range of web development topics, from JavaScript to React and beyond, and uncover valuable insights to enhance your skills.

Latest 2 articles:

Virtual DOM Diffing Complexity Explained

Rendering & Frameworks

The virtual DOM is one of the most discussed ideas in frontend development, yet the actual algorithm behind it — and why it makes tradeoffs it does — is rarely explained clearly. Here is what actually happens when React diffs two trees.

The JavaScript Event Loop: Macrotasks vs Microtasks

Web APIs & Async

JavaScript is single-threaded, yet it handles timers, network requests, and user input concurrently without freezing. The event loop is the mechanism that makes this possible — and understanding macrotasks vs microtasks explains the execution order that trips up almost every developer at some point.