7-Day React JS Interview Preparation Plan
Your saved questions plus a day-by-day plan. Add questions with Save to → 7-Day Job Prep on any question page.
Day-by-day plan
Day 1JavaScript and React basics
- Revise closures, promises, async/await, array methods and destructuring
- Revise JSX, components, props, Virtual DOM and keys
- Answer 20 fresher-level fundamentals questions aloud
- Rebuild a counter and todo app from memory
Day 2Props, state and hooks
- Practise immutable updates for objects and arrays
- Revise useState, useEffect dependencies and cleanup, useRef
- Write custom hooks: useFetch and useDebounce
- Explain stale closures and the updater function with examples
Day 3Advanced hooks and React 19
- Revise useMemo, useCallback, React.memo and the React Compiler
- Study useTransition, useDeferredValue, use, useActionState and useOptimistic
- Practise useReducer for a cart with add and remove actions
- Answer 15 scenario questions on effects and re-renders
Day 4State management and data fetching
- Build a Redux Toolkit slice with an async thunk
- Compare Context, Redux Toolkit, Zustand and TanStack Query
- Implement a TanStack Query fetch with caching and an optimistic update
- Prepare an answer on where to store auth tokens
Day 5Routing, forms and performance
- Set up React Router with nested, protected and lazy routes
- Build a form with React Hook Form and Zod validation
- Revise code splitting, virtualisation and Core Web Vitals
- Profile one of your projects with React DevTools
Day 6Testing and Next.js
- Write three tests with React Testing Library, user-event and MSW
- Revise CSR, SSR, SSG, ISR and Server Components
- Explain hydration errors and the use client boundary
- Practise one live coding task such as a debounced search with pagination
Day 7Mock interview and projects
- Do a timed mock interview covering concepts, coding and scenarios
- Prepare a two-minute walkthrough of your best React project
- Prepare four STAR stories: bug fix, deadline, conflict, learning
- Review the 30 revision points and your weak areas
Frequently asked questions
Can I prepare for a React JS interview in 7 days?
Seven days is enough to revise and sharpen, not to learn from zero. Use the plan to cover each core topic once, practise questions daily and finish with a mock interview.
How do I add questions to the plan?
On any question page choose Save to → 7-Day Job Prep. Saved questions show up at the top of this page.
How many hours a day should I study?
Two to four focused hours a day works for most people: one hour of revision, one to two hours of questions, and the rest on projects or mock answers.
Questions to practise each day
Company-wise React JS questionsExperience-wise React JS questionsRole-wise React JS questionsCity-wise React JS questionsMost asked React JS questionsScenario-based questionsPractical / hands-on questionsHR & behavioural questionsReact JS mock interviewOnline assessment questionsTechnical round questionsManagerial round questionsReact JS topic sheets