| <!DOCTYPE html> |
| |
| <html> |
| <head> |
| <style> |
| body { |
| margin: 0; |
| width: 800px; |
| height: 2000px; |
| } |
| .sticky { |
| position: sticky; |
| top: 0; |
| width: 150px; |
| height: 150px; |
| background: blue; |
| } |
| .dot { |
| position: absolute; |
| width: 50px; |
| height: 50px; |
| background-color: orange; |
| } |
| </style> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| } |
| |
| function setupDots() { |
| let across = 8; |
| let down = 20; |
| let spacing = 100; |
| let container = document.getElementById('dots-container'); |
| for (let col = 0; col < across; ++col) { |
| for (let row = 0; row < down; ++row) { |
| let div = document.createElement('div'); |
| div.className = 'dot'; |
| div.style.left = col * spacing + 'px'; |
| div.style.top = row * spacing + 'px'; |
| container.appendChild(div); |
| } |
| } |
| } |
| |
| function doTest() { |
| setupDots(); |
| if (window.testRunner) { |
| document.getElementById('result').innerText = internals.layerTreeAsText(document); |
| } |
| } |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| <div class="sticky"></div> |
| <div id="dots-container"></div> |
| <pre id="result"></pre> |
| </body> |
| </html> |
