Pranjal Rawat’s Post

Most ReactJS candidates fail interviews not because they lack skills… but because they can’t solve real problems under pressure 👀 Here are some of the most common hands-on tasks I’ve seen in React interviews: 🔹 Build a counter app (increment/decrement) 🔹 Create a form with validation 🔹 Fetch data from an API and display it 🔹 Build a search input with debounce 🔹 Implement a todo list (add/delete/mark complete) 🔹 Create a reusable modal component 🔹 Build a multi-select dropdown 🔹 Implement pagination 🔹 Create a custom hook (e.g. useFetch) 🔹 Optimize a slow rendering component 🔹 Implement infinite scrolling 🔹 Manage global state 🔹 Handle API errors globally 🔹 Build dynamic forms (config-based) ------------------------------------------------------------------------------- 💡 But the real challenge starts after this… 👉 How do you prevent unnecessary re-renders? 👉 How do you optimize API calls? 👉 Context API vs Redux — when to use what? 👉 How do you handle large datasets efficiently? 👉 When to use React.memo, useMemo, useCallback? 👉 How do you design scalable and reusable solutions? ------------------------------------------------------------------------------- 🎯 My takeaway: It’s not just about building features — it’s about how well you design, optimize, and explain them. That’s what actually differentiates candidates in interviews 🚀 What’s the toughest React question you’ve faced? #ReactJS #FrontendDeveloper #JavaScript #WebDevelopment #InterviewPreparation #SoftwareDeveloper #CareerGrowth

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