Virtual DOM

The Virtual DOM (Document Object Model) is a programming concept used primarily in web development, particularly in libraries like React. It acts as a lightweight copy of the actual webpage. When changes occur, the Virtual DOM quickly updates and calculates the differences compared to the real DOM, minimizing direct changes to the page. This process improves performance and efficiency, as it reduces the time and resources needed to render updates on the screen, resulting in a smoother user experience. Essentially, it makes web applications faster and more responsive.