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:

Browser Memory Leak Detection: Finding What the GC Cannot Collect

Performance

Memory leaks in UI applications are subtle and cumulative — they rarely cause an immediate crash but instead cause the application to slow down over time until the tab becomes unresponsive. Knowing where they come from and how to find them in DevTools is a critical skill for building long-lived browser applications.

Suspense Boundaries: Declarative Loading States in React

Rendering & Frameworks

React Suspense changes how loading states work. Instead of managing isLoading flags in every component, you declare where loading UI should appear with Suspense boundaries, and React takes care of showing fallbacks when any child is not ready to render.