| <!DOCTYPE html> |
| <html class="reftest-wait"> |
| <head> |
| <title>Finishing a View Transition on a scrolled page should properly reset state</title> |
| <link rel="author" title="Tim Nguyen" href="https://github.com/nt1m"> |
| <link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/"> |
| <link rel="match" href="reset-state-after-scrolled-view-transition-ref.html"> |
| <style> |
| html { |
| background: lightblue; |
| } |
| body { |
| background-color: lightgreen; |
| } |
| ::view-transition-group(*) { |
| animation-duration: 2s; |
| } |
| </style> |
| </head> |
| <body> |
| <p>Start</p> |
| <div id="block" style="height: 150vh"></div> |
| <p>End</p> |
| |
| <script> |
| function scrollBy(y) { |
| return new Promise(resolve => { |
| addEventListener("scroll", () => { |
| requestAnimationFrame(() => { |
| requestAnimationFrame(resolve); |
| }); |
| }, { once: true, capture: true }); |
| document.documentElement.scrollBy({ |
| top: y, |
| behavior: "instant" |
| }); |
| }); |
| } |
| addEventListener("load", async () => { |
| await scrollBy(document.documentElement.scrollHeight / 2); |
| const transition = document.startViewTransition(() => { block.style.height = '200vh' }); |
| await transition.ready; |
| scrollBy(document.documentElement.scrollHeight / 2); |
| await transition.finished; |
| document.documentElement.classList.remove("reftest-wait"); |
| }); |
| </script> |
| </body> |
| </html> |
