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 arrow functions?

331

What is the difference between reactjs and angularjs?

346

How can we build react in production mode?

339

What is “forward refs”?

343

What is the difference between createelement and cloneelement?

411

What is the differnece between real dom and virtual dom?

342

What is meant by pooling?

364

What is the purpose of render() in react?

388

What are arrow functions? How are they used?

350

What are controlled and uncontrolled components?

351

How it is different from other front end language?

310

What is function based component?

354

How do you embed two components in one component?

298

What is low-level component lifecycle in react.js?

388

What is reactjs-jsx? What are the advantages of using jsx? Explain basic code snippet of jsx with the help of a practical example?

327

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Un-Answered Questions { React.js }

Can JSX element be attached to other JSX components?

357

How state is useful for react?

360

Explain the limitations of react?

345

How to update the state of the component in reactjs?

364

Explain the components of Redux?

382

What is React State?

425

What is the ‘Store’ feature in Redux?

327

When should you use the top-class elements for the function element?

353

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

339

What is the difference between a Presentational component and a Container component?

368

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

321

Can you force a React component to rerender without calling setState?

349

What are the differentiate between stateful and stateless components?

399

What is react fiber?

364

What is the difference between various react component lifecycle methods?

403

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