Comhroinn Fuaime

And one more important thing… React is declarative. That means… we describe what the UI should look like… and React handles the updates. In interviews… always mention these keywords… Component-based… Reusable UI… Virtual DOM… and Declarative approach. What is Virtual DOM? “Virtual DOM… is a lightweight copy… of the real DOM. Instead of updating the real DOM directly… React first updates the Virtual DOM. When something changes… React creates a new Virtual DOM.