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54+ curated questions with the same answer shape every time: quick recap, deep dive, pitfalls, and follow-ups. Coverage includes react router basics, context api and usereducer, custom hooks, controlled vs uncontrolled forms, and more.
Suggested path
Topics follow a teaching order. Each answer ends with a clear Next question control so you can move forward without hunting the list.
Once you know React fundamentals, interviewers push into the ecosystem: how do you share state across components without passing props 12 levels deep (Context API), how do you navigate between pages (React Router), how do you call your Spring Boot API from React (fetch/axios inside useEffect, or a custom hook), and how do you keep forms manageable (controlled components with useState). This module covers these practical patterns alongside the performance hooks (useMemo, useCallback) that freshers often misunderstand, and custom hooks as the React idiom for reusable logic.
Full catalog
Topics are ordered for learning. Within each topic, rows are numbered 1–54 globally so you always know where you are. Collapse topics if you want a lighter view — use Expand all when you need the full list again.
Numbers 1–54 follow the order we recommend — click any row to open the full answer, or use the sticky Next link at the bottom of each page to go Q1 → Q54.