What is the Virtual DOM in React?

Virtual DOM is a lightweight copy of the actual DOM maintained by React.

When the state or props change, React creates a new Virtual DOM tree and compares it with the previous one using a process called Diffing.

React then updates only the changed parts in the real DOM, improving performance and reducing unnecessary re-rendering.

Benefits:

1. Faster updates
2. Better performance
3. Efficient DOM manipulation
4. Improved user experience

Example: When a counter changes from 1 to 2, React updates only that text node instead of re-rendering the entire page.