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

React.js Interview Questions

Questions Answers Views Company eMail

When would you use a class component over a functional component?

345

What is props?

329

What are the popular libraries used for flux?

466

Do you think reactjs has any limitations? If so, tell a few?

354

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

356

What are the differences between controlled and uncontrolled components?

324

What are the lifecycle methods of reactjs components?

334

What are keys in reactjs and why are they important?

376

What are the component life cycle methods in reactjs?

397

What is the life cycle of reactjs components?

339

What are the methods called when state or props of the component is changed?

337

What is controllable component in reactjs?

356

What is component in reactjs?

426

What do you mean by reactjs?

347

What are the difference between pros and state?

404

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Un-Answered Questions { React.js }

How do you this in constructor?

349

What is render() in React? And explain its purpose?

422

Is reactjs a framework?

343

What is the difference between React Native and React?

393

What is uncontrollable component in reactjs?

362

What can be done when there is more than one line of expression?

426

What are keys in reactjs and why are they important?

376

How can we do server-side rendering in React?

375

What is the life cycle of reactjs components?

339

What is React.PropTypes?

401

What is the Current Stable Version of React?

375

What is shouldcomponentupdate and when is used in react.js?

366

What are the differences between controlled and uncontrolled components?

324

What are the popular packages for animation?

409

What are arrow functions? How are they used?

345

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