React Interview Handbook

What's inside:

• HTML/CSS & JavaScript fundamentals
• React core concepts, JSX, props & state
• Hooks (useState, useEffect, custom hooks, and advanced patterns)
• State management (Redux, Context, Zustand, React Query)
• Performance optimization & React internals (Fiber, reconciliation)
• Testing, TypeScript, Next.js/SSR
• System design & architecture questions for senior/staff roles
• Behavioral & scenario-based questions with strong-answer guidance

Organized into 78 topic categories across 60 pages, structured by experience level (Fresher → Junior → Mid → Senior → Expert) so you can focus on exactly where you are in your career.