| <!DOCTYPE html> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <iframe></iframe> |
| <script> |
| |
| function writeDoc() { |
| var doc = document.querySelector("iframe").contentDocument; |
| doc.open(); |
| doc.write(` |
| <style> |
| ::-webkit-scrollbar-thumb { background-color: blue; } |
| ::-webkit-scrollbar { width: 50px; height: 50px; } |
| body { height: 400px; overflow: scroll; } |
| </style>`); |
| doc.close(); |
| assert_equals(doc.documentElement.offsetWidth, 250); |
| } |
| |
| test(() => { |
| writeDoc(); |
| writeDoc(); |
| }, "Preserve iframe custom scrollbar after replacing contents with document.write."); |
| |
| </script> |
