React Interview - Intermediate Level
For developers with 2-4 years of React experience. Master all hooks, Context API, performance optimization, custom hooks, and component patterns.
25-30 minutes
2-4 years of React experience
Who is this for?
Mid-level React developers
Frontend developers with React experience
Developers preparing for mid-senior roles
Engineers building complex React apps
What you'll practice
Using all React hooks effectively
Implementing Context API
Creating custom hooks
Optimizing React performance
Handling errors with boundaries
Advanced component patterns
Topics covered
Advanced Hooks
useCallback
useMemo
useReducer
useRef
Custom hooks
State Management
Context API
Prop drilling
State patterns
useReducer patterns
Performance
React.memo
useMemo vs useCallback
Lazy loading
Code splitting
Advanced Patterns
Error boundaries
HOCs
Render props
Compound components
Example questions
Q:
When would you use useCallback vs useMemo?
Q:
How does the Context API work and when should you use it?
Q:
How do you create a custom hook?
Q:
How do you optimize a React component's performance?
Q:
What are error boundaries and how do you implement them?
Q:
Explain the difference between useEffect and useLayoutEffect
Preparation tips
Master all React hooks
Build a project using Context API
Create several custom hooks
Practice performance optimization
Learn about Virtual DOM and reconciliation
Study React component patterns
Continue your journey
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