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:

The Browser Rendering Pipeline (Full Picture)

Performance

From the moment you type a URL to the moment pixels appear on screen, the browser executes a precise multi-stage pipeline. Understanding every stage — and what can interrupt each one — is the foundation for all frontend performance work.

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.