useEffect Dependency Array: Deep Mechanics Explained
Master useEffect dependencies in React. Learn when effects run, how React tracks changes, common pitfalls, and the 3 dependency exceptions that trip up developers.
React Hooks
Core Hooks
Explore 15 articles in this topic.
15 Articles
Browse topics:
useEffect Hook: 6 Common Mistakes Beginners Make
Master useEffect by learning what not to do. Understand dependency arrays, cleanup functions, async patterns, and the Rules of Hooks with complete code examples.
useContext in React: Solving Prop Drilling with Real Examples
Master React's useContext Hook to eliminate prop drilling. Learn to create providers, consume context, and build scalable state management with TypeScript examples.
useReducer vs useState: When to Use Each in React
Master the difference between useState and useReducer. Learn when to use each Hook, with comparison tables, code examples, and real-world patterns for better state management.
useCallback Hook Guide: Memoizing Functions Correctly
Master useCallback for React performance. Learn when to memoize functions, avoid common pitfalls, combine with memo(), and understand the React Compiler impact.
useMemo Performance Guide: When and How to Memoize Values
Master useMemo for React performance. Learn which computations to memoize, avoid common mistakes, compare with useCallback, and understand the React Compiler impact.
useRef Explained: Direct DOM Access and Mutable Values
Master useRef for DOM manipulation and persistent values. Learn controlled vs uncontrolled components, when to use refs, and how to avoid common pitfalls.
Why useLayoutEffect Exists: Synchronous DOM Updates
Master useLayoutEffect vs useEffect timing. Learn when to use synchronous effects to prevent flickering, handle measurements, and optimize animations.
useImperativeHandle: Exposing Custom Component APIs (2026)
Master useImperativeHandle for exposing imperative APIs from custom components. Learn when to use it, TypeScript patterns, and real-world scenarios with complete code examples.
useDebugValue: Debug Custom Hooks in DevTools (2026)
Master useDebugValue for displaying custom hook state in React DevTools. Learn formatting strategies, best practices, and performance optimization for production debugging.
useId: Generating Stable Unique IDs in React 19
Master useId for creating stable, unique identifiers in React 19. Learn accessibility patterns, SSR compatibility, and best practices with complete code examples.
useState vs useRef: When to Use Which Hook
Master the differences between React's useState and useRef hooks. Learn when to use each with complete code examples, real-world scenarios, and performance considerations.
useEffect Actually Works: Internals & Execution Model (2025)
Master useEffect's real mechanics in React 19. Learn cleanup sequences, fiber architecture, dependency tracking, and memory management with production code examples.
useState Explained with Simple Examples
A complete guide to React's most fundamental hook. Learn how to manage state, handle objects, and use functional updates correctly.
useEffect Cleanup Function Examples: Managing Side Effects
Master useEffect cleanup functions with practical examples. Learn how to prevent memory leaks, clear timers, remove event listeners, and handle subscription cleanup in React.