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?

322

How to dispatch the data in-store?

380

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

347

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

336

What are the popular animation package in React ecosystem?

377

How can we do server-side rendering in React?

375

Can you update props in react?

388

What is Babel in React js?

359

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

392

How to build the React app for production?

385

What is ComponentWillMount()?

484

Explain react hooks?

310

What is the difference between shadow dom and virtual dom?

416

Explain error boundaries?

348

List some of the major advantages of react?

364

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Un-Answered Questions { React.js }

Ho can you re-render a component without using setState() function?

379

What is the difference between angularjs vs react.js?

442

Explain yield catchphrase in JavaScript

359

What are the advantages of react router.

321

What is the component lifecycle in reactjs?

385

What are the popular animation package in React ecosystem?

377

Explain synthetic event in React js?

357

How can you update state in react js?

424

What is a state in reactjs and how is it used?

356

List down the advantages of react router?

373

What is the second argument that can optionally be passed to setState and what is its purpose?

470

What is function based component?

345

How to use forms in reactjs? Give an example of using forms in reactjs by developing a user registration form?

319

What is the use of a super keyword in React?

324

What is difference between setstate and forceupdate () and finddomnode () in reactjs?

329

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