| <!DOCTYPE html> |
| <title>CSS Values and Units Test: attr() invalidation</title> |
| <meta name="assert" content="Test attr() invalidation"> |
| <link rel="help" href="https://drafts.csswg.org/css-values/#attr-notation"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| div { |
| width: attr(data-foo type(<length>)); |
| } |
| </style> |
| |
| <html> |
| <body> |
| <div id="div" data-foo="10px"></div> |
| </body> |
| </html> |
| |
| <script> |
| setup({ single_test: true }); |
| let elem = document.getElementById("div"); |
| let old_width = window.getComputedStyle(elem).getPropertyValue("width"); |
| elem.setAttribute("data-foo", "30px"); |
| let new_width = window.getComputedStyle(elem).getPropertyValue("width"); |
| assert_not_equals(new_width, old_width); |
| done(); |
| </script> |
