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

React.js Interview Questions

Questions Answers Views Company eMail

How do you pass data from child to parent component?

422

How do you this in constructor?

383

When rendering a list what is a key and what is it's purpose?

362

What's the difference between super() and super(props) in React when using ES6 classes?

499

What is Children?

356

How is react different?

409

Why reactjs is used?

372

What are the features of react?

387

How reactjs framework is different as compared to others?

379

How is react different from angular?

418

What is the lifecycle methods order in mounting?

372

What are higher order components(hoc)?

434

What are the advantages of redux?

412

How to update a component every second?

443

What do you understand with the term polling?

405

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Un-Answered Questions { React.js }

what are the limitations of react?

547

How is redux different from flux?

404

What is “forward refs”?

381

What is a state in react?

404

Can you update the values of props?

384

How is react.js different from other javascript frameworks?

440

What is the difference between react components extend, createclass and mixins, hocs?

363

Why is react so popular?

337

What is the difference between state and props?

405

What is React State?

462

What are the lifecycle methods of reactjs components?

371

How events are different in react?

434

Give me two most significant drawbacks of React?

382

What is Flux Concept In React?

407

How can we find the version of react at runtime in the browser?

610

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