React Hooks Interview Questions

Hands-on React Hooks interview challenges — useState, useEffect, useMemo, useCallback, custom hooks, and the rules of hooks — built and tested in a live editor.

16 challenges

Debounce a Search Input with useDebounce

Build a Clock

#Effect and Lifecycle#State Management

Data Fetching with useEffect

#Effect and Lifecycle

Custom useToggle Hook

useInterval Hook

Focus an Input with useRef

usePrevious Hook

Persist State with useLocalStorage

Memoizing Expensive Calculation

#Hooks#Performance

Timer Controls

#Effect and Lifecycle

Advanced Theme Manager

#State Management#Hooks

useAsync Hook

#Hooks#Data Fetching

useReducer Implementation

#State Management#Hooks

Share State with Context

#Hooks#Context#State Management

Prevent Unnecessary Re-renders with useCallback

#Hooks#Performance#State Management

Advanced Custom Hooks (Very Hard)

#Hooks#State Management