Different Interview Questions in React for 5 Years Experience

If you have 5 years of experience in working with React, you may encounter a variety of interview questions that test your knowledge and expertise in this popular JavaScript library. Here are some common React interview questions that you should be prepared to answer:

1. What are the key features of React?

Employers may want to assess your understanding of the fundamental features of React. Be prepared to discuss the virtual DOM, reusable UI components, and the component-based architecture of React.

2. Explain the concept of JSX.

Interviewers may ask you to explain JSX and its advantages in React. You should be able to discuss how JSX allows you to write HTML-like code within JavaScript, making it easier to create and manipulate UI elements.

3. How does state differ from props in React?

Understanding the difference between state and props is crucial for working with React. Be prepared to explain that state is managed within a component and can be changed, while props are passed from parent to child components and are immutable.

4. Discuss the component lifecycle methods in React.

Interviewers may ask you to explain the various lifecycle methods in React, such as componentDidMount, componentDidUpdate, and componentWillUnmount. You should be able to discuss when and how these methods are used in a React component.

5. What are Pure Components in React?

Be prepared to discuss the concept of Pure Components and how they differ from regular components. You should be able to explain how Pure Components perform a shallow comparison of state and props to determine if a re-render is necessary.

6. How do you handle forms in React?

Employers may want to assess your understanding of form handling in React. Be prepared to discuss controlled components, uncontrolled components, form validation, and form submission in React.

7. What are higher-order components in React?

Be ready to discuss higher-order components and their role in reusing component logic. You should be able to explain how higher-order components are used to enhance the functionality of existing components in React.

These are just a few examples of the types of questions you may encounter in a React interview for a 5 years experience. It’s important to be well-prepared and confident in your knowledge of React to stand out as a strong candidate for the role.