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React.js Interview Questions
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What is high-level component lifecycle in react.js?

 261

What are state and props in reactjs? What is the difference between the two? Give a proper example of using state and props to elaborate the concept with complete source code?

 258

What is the difference between setstate() and forceupdate()?

 248

What are pure functional components?

 253

What is the difference between angularjs vs react.js?

 285

What is the difference between an element and a component in react?

 240

How to use events in reactjs? Give an example of using events?

 273

Can you explain about the standard javascript toolchain, transpilation, jsx?

 262

How to apply validation on props in reactjs? Apply validation in previously developed example in above question?

 257

What is reactjs-jsx? What are the advantages of using jsx?

 253

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

 268

How would you create higher order components (hocs) in react.js?

 236

Explain about the standard javascript toolchain, transpilation, jsx?

 241

What is the significance of refs in react?

 249

What is flux in react.js?

 302

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Un-Answered Questions { React.js }

What is the difference between state and props in react js?

300

What is high-level component lifecycle in react.js?

261

What is React State?

273

What is redux and flux?

246

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

239

Can JSX element be attached to other JSX components?

264

What is the use of arrow function in reactjs?

251

When would you use a class component over a functional component?

272

Is reactjs a framework?

251

What is the second argument that can optionally be passed to setState and what is its purpose?

385

Difference between constructor and getInitialState ?

252

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

225

What is the difference between various react component lifecycle methods?

247

What is reactjs-jsx? What are the advantages of using jsx?

253

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

304

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