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 are the differences in between real dom and virtual dom?

480

What are the differentiate between stateful and stateless components?

448

What is uncontrollable component in reactjs?

401

How to update the state of the component in reactjs?

396

What are the components in flux architecture?

399

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

383

What is repository url of reactjs?

406

In which lifecycle event do you make ajax requests and why?

394

Is it possible to display props on a parent component?

408

What is higher order components (hoc)?

378

How to use loop in reactjs?

455

What are the methods called when component is created or while inserting it to dom?

358

What are refs in react and why are they important?

379

What are refs in reactjs?

364

What is the use of arrow function in reactjs?

402

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Un-Answered Questions { React.js }

What do you understand by refs in react?

361

What are the advantages of react router.

366

What are the different phases of react component’s lifecycle?

565

What is flux concept in reactjs?

401

What is “forward refs”?

381

What is the component lifecycle in reactjs?

440

What is Redux?

373

What is flux concept in reactjs? Explain various flux elements including action, dispatcher, store and view. Give a simple practical example of installing and using flux in an application?

384

Explain the term high order component

379

What are the advantages and disadvantages of using react components?

463

How can we build react in production mode?

360

How to update the state of the component in reactjs?

396

How to use loop in reactjs?

455

What are the differences in between real dom and virtual dom?

480

What is JSX?

356

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