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Interview questions with clear answers, code examples and links to go deeper.
React articles
React testing interview questions: Jest and React Testing Library
How to test React components, what to test, queries and user events, mocking fetch, async tests and common mistakes, with examples for Jest and React Testing Library.
8 min read · Oct 31, 2026
ReactReact state management: useState, useReducer, Context and when to use a library
How to choose between useState, useReducer, Context, server-state tools and libraries like Redux Toolkit, with examples and the interview answers that show good judgment.
8 min read · Oct 31, 2026
React25 React interview questions and answers with examples (2026)
The React interview questions asked most in 2026: rendering, state, hooks, keys, context, Suspense, Server Components and performance, each with a short answer and a code example.
18 min read · Oct 30, 2026
ReactReact Hooks interview questions you should be able to answer
useState, useEffect, useMemo and useCallback: the questions interviewers ask most, with short, correct answers.
6 min read · Oct 20, 2026
ReactReact performance optimization: questions and answers
Memoization, re-renders, code splitting and lists: how to answer performance questions with substance.
6 min read · Oct 10, 2026
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