Virtual DOM

The Virtual DOM (VDOM) is a core concept in React and other modern JavaScript frameworks. It's a lightweight JavaScript object that mirrors the structure of the real DOM (Document Object Model), but exists in memory instead of on the page. React uses this virtual representation to efficiently update the UI.

Here’s how it works: when something in your app changes (like a user typing into a form), React first updates the Virtual DOM. It then compares this new version with the previous one using a process called diffing. This comparison allows React to determine exactly which parts of the real DOM need to change.

Instead of re-rendering the entire UI, React only updates the necessary parts—making the process significantly faster and more performance-friendly, especially in large or frequently updated interfaces.

Why it matters:

Direct DOM manipulation is slow because the DOM is complex and requires layout reflows and repaints. By using the Virtual DOM, React avoids costly operations and batches updates, resulting in smoother, more responsive interfaces.

In short, the Virtual DOM helps React deliver a high-performance, declarative UI experience by making DOM updates smarter, not harder.

What is Superflex.ai?

Superflex.ai was built for teams that want to move fast without losing quality. Instead of pausing to spec things out, explain design decisions, or rebuild layouts from scratch, you can let Superflex do the heavy lifting. It delivers production-ready React code that mirrors your Figma designs—so designers and developers stay in sync, and progress never stalls.