React.js Interview Questions
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How react component lifecycle methods help in building interfaces?

264

What is shouldcomponentupdate and when is used in react.js?

255

What is react.js? How is it different from other javascript frameworks?

257

Explain step by step approach on how to setup environment for reactjs?

233

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?

251

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

233

Which feature can we use to cause a component to render only when its id changes?

366

What is redux and flux?

246

What is the virtual dom, and a pragmatic overview of how react renders it to the dom in react.js?

248

Explain lifecycle of a react component?

246

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

253

How to set up routing in reactjs. Explain with the help of step by step approach?

225

What is a router in react.js?

241

Please explain step by step approach on how to setup environment for reactjs?

247

What are state and props in reactjs? What is the difference between the two?

240


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Un-Answered Questions { React.js }

What are the popular libraries used for flux?

358


What is react js good for?

258


What is the ‘Store’ feature in Redux?

251


What are the difference between pros and state?

249


Why do you need to use props.children?

238


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

253


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

255


Can you update the values of props?

264


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

252


What is react intl?

445


What is arrow function in react?

279


What is props?

242


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

275


What are synthetic events?

226


What is the difference between createelement and cloneelement?

245