| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <title>CSS sibling-index() and sibling-count()</title> |
| <link rel="help" href="https://drafts.csswg.org/css-values-5/#tree-counting" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| html { |
| z-index: calc(sibling-index() * 2); |
| widows: calc(sibling-count() * 2); |
| } |
| #test { |
| z-index: calc(sibling-index()); |
| counter-increment: foo calc(sibling-count()); |
| left: calc(10% + 100px * sibling-index()); |
| } |
| #test::before { |
| content: ""; |
| z-index: calc(sibling-index() * 2); |
| widows: calc(sibling-count() * 2); |
| } |
| </style> |
| </head> |
| <body> |
| <div> |
| <div></div> |
| <div id="test"></div> |
| <div></div> |
| <div></div> |
| <ul></ul> |
| </div> |
| <script> |
| test(() => { |
| let style = getComputedStyle(document.getElementById('test')); |
| assert_equals(style.zIndex, '2'); |
| }, 'basic sibling-index() test'); |
| |
| test(() => { |
| let style = getComputedStyle(document.getElementById('test')); |
| assert_equals(style.counterIncrement, 'foo 5'); |
| }, 'basic sibling-count() test'); |
| |
| test(() => { |
| let style = getComputedStyle(document.getElementById('test')); |
| assert_equals(style.left, 'calc(10% + 200px)'); |
| }, 'sibling-index() in calc() with percentage'); |
| |
| test(() => { |
| let style = getComputedStyle(document.getElementById('test'), '::before'); |
| assert_equals(style.zIndex, '4'); |
| assert_equals(style.widows, '10'); |
| }, 'sibling-count() on pseudo-element'); |
| |
| test(() => { |
| let style = getComputedStyle(document.documentElement); |
| assert_equals(style.zIndex, '2'); |
| }, 'sibling-index() on root'); |
| |
| test(() => { |
| let style = getComputedStyle(document.documentElement); |
| assert_equals(style.widows, '2'); |
| }, 'sibling-count() on root'); |
| </script> |
| </body> |
| </html> |
