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React.js Interview Questions
Questions Answers Views Company eMail

How do you pass data from child to parent component?

 175

How do you this in constructor?

 176

When rendering a list what is a key and what is it's purpose?

 167

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

 191

What is Children?

 171

How is react different?

 180

Why reactjs is used?

 171

What are the features of react?

 206

How reactjs framework is different as compared to others?

 174

How is react different from angular?

 176

What is the lifecycle methods order in mounting?

 184

What are higher order components(hoc)?

 188

What are the advantages of redux?

 176

How to update a component every second?

 210

What do you understand with the term polling?

 193

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Un-Answered Questions { React.js }

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

171

Explain the use of the arrow function in React

183

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

195

What is React State?

184

What is reactjs-jsx?

168




What are the component life cycle methods in reactjs?

169

What is uncontrollable component in reactjs?

177

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

211

What are the advantages of react router.

158

What are react component lifecycle methods?

168

What are refs in reactjs?

176

What is the lifecycle methods order in mounting?

184

How do you modularize code in react?

143

Enlist the advantages and disadvantages of reactjs?

178

Name out an important feature of Redux workflow features

186

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