React Questions

1. What is the output of the following code?

const make = 'Ford';
const model = 'Mustang';
const car = { make, model };
console.log(car);

2. How can you access the state of a component from inside of a member function?

3. How can you optimize performance for a function component that always renders the same way?

4. React Js is ______based architecture approach

5.  If you want to import just the Component from the React library, what syntax do you use?

6. How many stages are there in React js life cycle

7. What do you call a React component that catches JavaScript errors anywhere in the child component tree?

8. What is the children prop?

9. What is the correct syntax to import a Component from React?

10. As soon as the state of react component is changed, component will

11. React components are composed to create a user interface. How are components composed?

12. Which of the following are the advantages of React.js?

13. For controlled components in react

14. Which of the following is the correct data flow sequence of flux concept?

15. What is the difference between the click behaviors of these two buttons (assuming that this.handleClick is bound correctly)?

A. < button onClick={this.handleClick} > Click Me < /button >  < /code> < /pre >

B. < button onClick={event => this.handleClick(event)}> Click Me < /button >