What is the Purpose of Using ReactJS and Why is it Popular for Building User Interfaces?

ReactJS is a JavaScript library primarily used for building user interfaces. It is popular among developers because of its virtual DOM (Document Object Model) and component-based architecture.

The purpose of using ReactJS is to create interactive and dynamic user interfaces with efficiency and flexibility. ReactJS allows developers to efficiently update and render components, leading to better performance and user experience.

Additionally, ReactJS's component-based approach promotes code reusability and maintainability, making it easier for developers to manage complex UI structures and easily scale their applications.

In summary, ReactJS is popular for building user interfaces due to its efficient rendering, component reusability, and scalability, making it a preferred choice for modern web development projects.