Virtual DOM
Domain: Internet & Web
🎯 Motivation
React’s internal representation of the DOM. Enables efficient UI updates by comparing changes.
📋 Concrete Example
Virtual DOM: React keeps a copy of the DOM in memory. When data changes, React: 1) updates the virtual DOM. 2) Compares with the real DOM. 3) Updates only the changed parts. Efficient.
🔗 Analogy
The virtual DOM is like a draft blueprint - the architect (React) sketches changes on a draft first, compares with the current blueprint, and only sends the differences to the builder (browser). Efficient, no wasted work.