| <!DOCTYPE html> | |
| <pre id=log></pre> | |
| <div id=target style="aspect-ratio: 1 / 2;"></div> | |
| <script> | |
| if (window.testRunner && window.internals) { | |
| testRunner.dumpAsText(); | |
| document.body.offsetTop; | |
| internals.startTrackingLayoutUpdates(); | |
| target.style.color = "blue"; | |
| document.body.offsetTop; | |
| log.textContent = `Layout count: ${internals.layoutUpdateCount()}`; | |
| } | |
| </script> |