React Interview Questions and Answers

React Interview Questions

React Interview Questions and Answers

What is React and What are the features of React?

What is the difference between real DOM and virtual DOM?

Can you explain JSX?

Can browsers read a JSX file and Why?

Why do we use render() in React?

What are the various lifecycle methods of React components?

What are states in React?

What is the significance of keys in React?

What do you know about Props in React?

Explain, how does the state differ from props in React?

How will you distinguish Redux from Flux?

Can you explain event in React?

Can you explain Synthetic Events in React?

Can you explain HOC?

Can you define Refs in React?

What is the use of Refs?

What do you know about components in React?

Can you provide example for Class components and Function components?

What are the primary purpose of props in React?

How will you pass a parameter to an event handler?

How will you create refs?

Can you explain the difference between Shadow DOM and Virtual DOM?

What do you know about controlled components?

What do you know about uncontrolled components?

How will you write comments in React

How will call function when the component renders?

Why should we use className over class attribute in React?

What is React Router and Why do we need a Router in React?

What are the advantages of React Router?

What is various style in the React Component?

What are keys in React? What is the syntax of Keys?

What is the difference between controlled and uncontrolled components?

What is the difference between cloneElement and createElement in React?

Who uses React?

What are the Pros and Cons of React?