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 can you spill the reducers?

907

Why is it necessary to capitalize component names?

453

Differentiate between real dom and virtual dom?

371

What is the life cycle of reactjs?

426

What is Reactjs?

405

What is an action in Redux?

418

Can JSX element be attached to other JSX components?

424

What is the difference between React Component and React Element?

497

List down the advantages of react router?

454

Explain React Router

434

What is unidirectional data flow? How does data flow happening in Redux?

453

Explain the use of ‘key’ in react list

460

When was React first released?

452

Explain the term stateless components

397

Explain strict mode

427

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Un-Answered Questions { React.js }

Which is best react or angular?

397

What is arrow function in react?

472

Why is switch keyword used in react router v4?

401

Why vue js is better than react?

390

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

658

What is meant by pooling?

439

What kind of tools might you use in the build steps to optimize the compiled output of the react code?

569

What is repository url of reactjs?

440

Can JSX element be attached to other JSX components?

424

What are the lifecycle methods going to be deprecated in react v16?

423

Is it possible to nest jsx elements into other jsx elements?

425

How react component lifecycle methods help in building interfaces?

510

What are the components in flux architecture?

428

What are synthetic events in react?

452

How it is different from other front end language?

386

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