6 minintermediate
React useEffect Dependencies — The Bug That Keeps Coming Back
Why your effect reads old state, fires twice, or loops forever — and the simple rules to fix it (interview-ready).
Bite-sized JavaScript, React & Next.js tips.
Short posts with code and diagrams. Readable in minutes.
3 minintermediate
React memo vs useMemo vs useCallback — When to Use Which
Three React APIs that all say 'memoize' — but they do different things. Clear explanations, examples, and a cheatsheet.
1 minintermediate
useDeferredValue Explained: Keeping React UIs Responsive
How useDeferredValue works under the hood, when to use it, and how it differs from useTransition.
3 minintermediate
useTransition Explained: Make React Feel Instant
How useTransition works under the hood, when to use it, and how it differs from useDeferredValue.
3 minintermediate
React Context Explained: How It Works Under the Hood
Understand what React Context is, how it works internally, and best practices for using it effectively.
4 minintermediate
How useState Works Under the Hood (and Why It Needs use client)
Deep dive into React's useState, how it works internally, and why client components are required in Next.js App Router.
2 minintermediate
React useRef vs useState — When to Use Which
A simple guide to understanding when to use useRef and useState in React, with examples, mental models, and a quick cheatsheet.