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
React js Hooks Introduction Practice Questions with Solutions
Introduction React Hooks aise functions hain jo function components ko React features use karne ki ability dete hain, jaise state,
React js Form Validation Practice Questions with Solutions
Introduction Form Validation ka use React applications mein user ke entered data ko check karne ke liye hota hai. Validation