Why React is a Single Page Application

1. Why React is a Single Page Application? React is used to build single-page applications (SPAs) because it enables the development of web apps that load a single HTML page and then dynamically update the content using JavaScript, without requiring full page reloads. This results in a faster, more responsive, and app-like user experience compared to traditional multi-page applications (MPAs). Examples: Gmail, Facebook 2. Why React is used for SPA? No full page reload In traditional websites: Every click → new request → full page reload In React: Only specific components update. Page does NOT reload. Component-Based Architecture React breaks UI into small components: Navbar,Home,About,Cart Only the required component updates instead of the whole page. Virtual DOM React uses Virtual DOM: Compares old UI vs new UI Updates only changed parts Better User Experience Faster navigation Smooth transitions App-like feel