React js Lifting State Up Practice Questions with Solutions
Introduction Lifting State Up is a common React pattern used when multiple components need to work with the same state.
Reactjs Practice Questions
React js Custom Hooks Practice Questions with Solutions
Introduction Custom Hooks in React are reusable JavaScript functions that allow you to share stateful logic between multiple components. A
React memo Practice Questions with Solutions
Introduction React.memo is a React performance optimization that allows a component to skip re-rendering when its props have not changed.
React js useCallback Hook Practice Questions with Solutions
Introduction The useCallback Hook is used to cache a function between renders. This can be useful when a function is
React js useMemo Hook Practice Questions with Solutions
Introduction The useMemo Hook is used to cache the result of a calculation between renders. React can reuse the previously
React js useRef Hook Practice Questions with Solutions
Introduction The useRef Hook allows a React component to keep a value between renders without causing a re-render when that
React js useEffect Cleanup Practice Questions with Solutions
Introduction The cleanup function in useEffect is used to stop or remove something that an effect started. It is useful
React js useEffect with Dependencies Practice Questions with Solutions
Introduction The dependency array controls when a React useEffect needs to run again. By adding state variables, props, or other
React js useEffect Hook Practice Questions with Solutions
Introduction The useEffect Hook is used in React to synchronize a component with external systems and handle side-effect logic. It