View Transitions API: Smooth Page Navigation Code Example

This prompt instructs an AI coding assistant to build a working demo of the View Transitions API — a modern browser feature that enables smooth, animated transitions between page states without the complexity of traditional JavaScript animation libraries. The generated output typically includes two navigable content pages, a simple navigation control, and a crossfade animation wired up through the API's document.startViewTransition() method. It is an ideal starting point for front-end developers who want to modernize their routing experience in multi-page or single-page applications.

Real-world use cases include portfolio sites, documentation platforms, e-commerce product pages, and any interface where abrupt content switches hurt the user experience. Because the View Transitions API is natively supported in modern Chromium-based browsers and gaining broader adoption, learning it now is a practical investment. To extend this prompt, try specifying different animation styles such as slide-in, scale, or shared-element transitions, or ask the model to integrate the demo into a specific framework like React or Astro for a more production-ready result.