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?

377

How do you this in constructor?

357

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

326

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

464

What is Children?

324

How is react different?

381

Why reactjs is used?

341

What are the features of react?

357

How reactjs framework is different as compared to others?

355

How is react different from angular?

379

What is the lifecycle methods order in mounting?

339

What are higher order components(hoc)?

395

What are the advantages of redux?

372

How to update a component every second?

406

What do you understand with the term polling?

368

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Un-Answered Questions { React.js }

What is the difference between various react component lifecycle methods?

403

How is flux different from redux?

363

What are the feature of reactjs?

518

What is React.createElement?

380

What are the advantages and disadvantages of using react components?

410

When was React first released?

380

How to use https instead of http in create-react-app?

404

what is the usage of refs and keys used in react?

408

Explain lifecycle of a react component?

376

Explain the Presentational segment

436

What is component in reactjs?

433

What are state and props in reactjs?

417

What is Redux Thunk used for?

369

How is react.js different from other javascript frameworks?

398

What are components in reactjs? Explain the component lifecycle with the help of a diagram explaining each component method in detail. Also, give an example of both stateless and stateful components with source code?

340

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