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React.js Interview Questions
Questions Answers Views Company eMail

What are the differences in between real dom and virtual dom?

440

What are the differentiate between stateful and stateless components?

399

What is uncontrollable component in reactjs?

373

How to update the state of the component in reactjs?

364

What are the components in flux architecture?

360

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

339

What is repository url of reactjs?

373

In which lifecycle event do you make ajax requests and why?

359

Is it possible to display props on a parent component?

366

What is higher order components (hoc)?

348

How to use loop in reactjs?

408

What are the methods called when component is created or while inserting it to dom?

327

What are refs in react and why are they important?

334

What are refs in reactjs?

331

What is the use of arrow function in reactjs?

371


Post New React.js Questions

Un-Answered Questions { React.js }

Give me two most significant drawbacks of React?

331


What are the purpose of render() in react?

345


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

368


What are controlled and uncontrolled components?

351


Why do we need a router in react?

384


How to use events in reactjs?

343


What is react router?

361


What is the difference between react components in es5 and es6?

362


What are controlled components?

327


What is the difference between React Component and React Element?

418


How can we build react in production mode?

339


What is the lifecycle methods order in mounting?

339


Does React re-render all components and sub components every time setState is called?

399


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

321


What is the difference between function based component and class based component?

399