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