What React questions are asked in frontend interviews?
Hooks (useState, useEffect, useMemo, useCallback, useRef), reconciliation, virtual DOM, keys, custom hooks (useDebounce, useFetch), context vs Redux, and performance optimization (memo, lazy loading, code splitting).
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More FAQs in Frontend Interview Questions Asked by Top Companies
Closures, the event loop, polyfills (map, filter, reduce, bind), debounce (Flipkart), throttle (Walmart), currying sum(1)(2)(3) (Amazon), call/apply/bind, prototypes, event bubbling (Oyo), event delegation, async/defer (Ola), and CORS.
OTP input, progress bar, autocomplete search bar, pagination, tab form, file explorer, food ordering app, image carousel, accordion, and modal. Practice building each in 90 minutes.
Design Instagram's feed, Netflix's video player, Twitter's feed, WhatsApp's chat, an autocomplete search system, a multi-step form wizard, or a notification system. Discuss rendering, state management, APIs, and performance.
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