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?

385

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?

500

What is Children?

357

How is react different?

415

Why reactjs is used?

375

What are the features of react?

387

How reactjs framework is different as compared to others?

380

How is react different from angular?

426

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?

444

What do you understand with the term polling?

405

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Un-Answered Questions { React.js }

What is React.createClass?

385

Explain React Router

397

What is react fiber?

400

What is React State?

465

What are pure components?

349

Which is better angular or react js?

389

Name two types of React component?

428

why can’t browsers read jsx?

379

What is repository url of reactjs?

406

What is the use of a super keyword in React?

369

What are lifecycle hooks react?

455

What is import in react?

396

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

445

When was React first released?

411

What is the difference between state and props?

405

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