How does React handle re-renders?

Can you explain how React handles re-renders?

Sure! React uses a virtual DOM to optimize re-renders. When a component's state or props change, React first updates the virtual DOM.

What happens after the virtual DOM is updated?

After updating the virtual DOM, React compares it with the previous version using a process called reconciliation. It identifies what has changed.

Does this mean that React only updates parts of the UI that changed?

Exactly! React efficiently updates only the parts of the actual DOM that need to change, which improves performance.

Are there any best practices to minimize unnecessary re-renders?

Yes! You can use React.memo for functional components, PureComponent for class components, and optimize state management.