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 is jsx and how jsx can help applications in react.js?

486

How react router and its techniques differ from more traditional javascript routers like backbone’s router?

518

What are features of react.js?

329

Show how the data flows through redux?

332

How are forms created in react?

359

Differentiate between states and props.

366

Explain the purpose of render() in react.

351

What do you understand by refs in react?

333

How can you embed two or more components into one?

329

How do you modularize code in react?

349

How can you update the state of a component?

338

What do you understand by virtual dom? Explain its working.

304

What is arrow function in react? How is it used?

388

What do you understand from “in react, everything is a component.”

350

How different is react’s es6 syntax when compared to es5?

406

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Un-Answered Questions { React.js }

Is react a mvc framework?

348

What is the difference between a function in setState or passing an object?

341

Explain various flux elements including action, dispatcher, store and view. Give a simple practical example of installing and using flux in an application?

316

What are stateless components in reactjs?

350

State the difference between getIntialState() and constructor()?

307

What are portals in react?

445

What are controlled components?

327

What is flux in react.js?

431

What are the differentiate between stateful and stateless components?

399

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

399

What are components in reactjs?

355

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

464

What is Redux Thunk used for?

369

List some of the cases when you should use refs?

304

What is higher order components (hoc)?

348

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