- What is ReactJs
- What is difference between virtual dom and shallow dom, dom in ReactJs
- What is controlled and uncontrolled component in ReactJs
- What is hooks in ReactJs
- What is jsx, babel, webpack
- What is Redux
- What is reducer, action, store in Redux
- What is middleware in Redux
- Explain data flow in Redux
- What is Redux-Thunk
- What is Redux-Saga, Difference between Redux-thunk and Redux-saga
- Difference between class component and function component
- How can we implement componentWillUnmount in function component useEffect,UseState, useMemo.useCallback hooks in Details
- Explain lifecycle method in React js
- What is difference between export default and export in ReactJs
- What is portal in React js
- What is reconciliation in React js
- What is useRef in React js
- What is server side render in React js
- What is useStrict in React js
- What is fragment in React js
- What is react router in React js
- What is node module in React js
- What is the default localhost server port in react js.
- How can we change the local server port
- What is high order component in React js
- What is pure component in React js
- What is difference state and props in React js
- How to optimize React js app
- What is difference between React js and Angular js
- What is prop drilling in React js how to overcome it
- What is context api in React js
- What is super, constructor, render function in React js
Most Important ReactJs Interview Questions in 2022
