👋 Welcome to React Interview FAQs by Naresh i Technologies!br In this session, we answer a frequently asked frontend interview question:br 🧠 "Why do we need to define a key for every iterating item in React?"br br 🎯 You’ll Learn:br ✅ What happens when rendering lists with .map()br ✅ Why React throws warnings without keybr ✅ How keys help React identify, update & delete elements efficientlybr ✅ Best practices for assigning unique keysbr ✅ Performance and re-rendering improvements using keybr br 📌 Pro Tip: Always use a stable and unique key — avoid using array indexes in dynamic lists!br br 🔁 Perfect explanation for freshers and working professionals preparing for React interviews.br br 📞 Call: +91 8179191999br 🌐 Visit: www.nareshit.