💻 React.js Coding Challenges I’ve Been Practicing 🔥 After exploring React interview theory questions last week, I shifted gears this week — diving into hands-on coding challenges that really test your problem-solving skills 🚀 Here are some fun and practical ones I’ve been tackling 👇 ⚛️ Hooks & Logic 1️⃣ Build a custom hook for fetching data with loading and error states 2️⃣ Implement a debounce hook to control rapid API calls (like search inputs) 3️⃣ Create a usePrevious hook that tracks the previous value of a prop or state ⚙️ Performance Optimization 4️⃣ Implement lazy loading for components using React.lazy + Suspense 5️⃣ Use React.memo, useCallback, and useMemo to prevent unnecessary re-renders 6️⃣ Optimize large list rendering using react-window or virtualization 🧩 State Management 7️⃣ Build a mini Context + Reducer setup (without Redux) 8️⃣ Sync state with localStorage using a custom hook 🧪 Testing Challenge 9️⃣ Write a test for a component that fetches data using Jest + React Testing Library 🔟 Mock API calls and assert correct rendering for loading, success, and error states 💡 Key takeaway: “The best way to prepare for interviews is to build small, real things repeatedly. Theory makes sense only when you see it in action.” Would you like me to share step-by-step explanations or more challenges next week? 💻 Comment “🔥 Challenge Accepted” if you’re up for it! #ReactJS #FrontendDeveloper #ReactHooks #JavaScript #WebDevelopment #CodingChallenge #InterviewPreparation #CareerGrowth
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