| <!DOCTYPE html> |
| |
| <style> |
| #bigdiv { |
| width: 200px; |
| height: 1100px; |
| } |
| </style> |
| |
| <div id="bigdiv"> |
| </div> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <script> |
| 'use strict'; |
| const bigdiv = document.getElementById("bigdiv"); |
| |
| async_test((t) => { |
| // 1. scroll to bottom. |
| window.scrollBy(0, 100); |
| assert_equals(window.scrollY, 100); |
| |
| // 2. remove bigdiv and push state. |
| history.pushState(1, null, "page2.html"); |
| document.body.removeChild(bigdiv); |
| assert_equals(window.scrollY, 0); |
| |
| window.onpopstate = () => { |
| document.body.appendChild(bigdiv); |
| setTimeout(() => { |
| t.step(() => { |
| assert_equals(window.scrollY, 100); |
| }); |
| t.done(); |
| }, 0); |
| }; |
| |
| // 3. navigation back. page should restore scroll position to 100, see below. |
| history.back(); |
| }, "load-in-same-doc-and-change-DOM-onpopstate"); |
| </script> |
