React.js Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

React.js Interview Questions

Questions Answers Views Company eMail

What is the ‘Store’ feature in Redux?

397

How to dispatch the data in-store?

466

What is the use of React.Children.map(props.children, () => )?

426

List down some of the methods in a react-dom package

391

What are the popular animation package in React ecosystem?

445

How can we do server-side rendering in React?

461

Can you update props in react?

470

What is Babel in React js?

425

What is the purpose of callback function as an argument of setstate()?

469

How to build the React app for production?

457

What is ComponentWillMount()?

573

Explain react hooks?

419

What is the difference between shadow dom and virtual dom?

509

Explain error boundaries?

423

List some of the major advantages of react?

448

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Un-Answered Questions { React.js }

How arrow functions are used?

394

What is the difference between the state and props in reactjs?

488

What are components in reactjs? Explain the component lifecycle with the help of a diagram explaining each component method in detail. Also, give an example of both stateless and stateful components with source code?

427

What is React.createClass?

415

What is the Current Stable Version of React?

471

What do you understand by virtual dom?

407

Explain yield catchphrase in JavaScript

430

What is jsx and how jsx can help applications in react.js?

570

What is the use of ‘prop-types’ library?

510

How can you spill the reducers?

907

How react component lifecycle methods help in building interfaces?

510

What is the difference between angularjs vs react.js?

519

What are class based component?

401

What is Babel in React js?

425

Explain synthetic event in React js?

435

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