React useCallback Explained — Avoid Unnecessary Re-renders Like a Pro!
Welcome to Frontend Weekly!
In this video, we explore the useCallback hook — a powerful tool for improving performance in React apps. If you pass functions as props to child components, this hook can save you from unnecessary re-renders and weird performance issues.
✅ What you’ll learn in this video:
• What useCallback does and how it works
• Why function references cause re-renders
• When to use useCallback (and when not to)
• The difference between useMemo and useCallback
• Real-world examples with React.memo
• Common mistakes developers make