| <!doctype html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1740702"> |
| <link rel="match" href="../reference/ref-filled-green-100px-square-only.html"> |
| <style> |
| #grid { |
| display: grid; |
| width: 100px; |
| height: 100px; |
| background: red; |
| } |
| |
| #initiallyHidden { |
| display: none; |
| width: 100px; |
| height: 100px; |
| background: green; |
| } |
| </style> |
| </head> |
| <body> |
| <p>Test passes if there is a filled green square.</p> |
| <div id="grid"> |
| <div> |
| <div> |
| <div> |
| <div id="initiallyHidden"> |
| </div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <script> |
| "use strict"; |
| |
| const grid = document.getElementById("grid"); |
| const initiallyHidden = document.getElementById("initiallyHidden"); |
| document.documentElement.offsetHeight; // Flush layout |
| |
| // Fails in buggy Firefox build because it prevents reflows from happening |
| getComputedStyle(grid).getPropertyValue("grid-template-columns"); |
| |
| document.documentElement.offsetHeight; // Flush layout again |
| |
| initiallyHidden.style.display = "block"; // This should trigger a reflow. |
| </script> |
| </body> |
| </html> |
