| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| |
| body { height: 4000px; } |
| div { height: 100px; } |
| |
| </style> |
| <div id="block1">abc</div> |
| <div id="block2">def</div> |
| <script> |
| |
| // Tests that growing an element above the viewport produces a scroll |
| // anchoring adjustment equal to the amount by which it grew. |
| |
| test(() => { |
| document.scrollingElement.scrollTop = 150; |
| document.querySelector("#block1").style.height = "200px"; |
| assert_equals(document.scrollingElement.scrollTop, 250); |
| }, "Minimal scroll anchoring example."); |
| |
| </script> |
