| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSS Selectors: :is()</title> |
| <link rel="author" title="Victoria Su" href="mailto:victoriaytsu@google.com"> |
| <link rel="help" href="https://drafts.csswg.org/selectors-4/#matches"> |
| <meta name="assert" content="This tests that the :is() selector is effective when nested"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| /* Testing that highest specificity is chosen for class outside of :is() */ |
| .a+.b+.c>.e+.d { |
| color: black; |
| font-size: 10px; |
| width: 10px; |
| } |
| .e:is(.b+.f, .e:is(*, .c>.e, .g, *))+.d { |
| color: red; |
| font-size: 20px; |
| } |
| .a+.b+.c>.e+.d { |
| color: yellow; |
| } |
| /* Testing specificty of a class within :is() */ |
| .a+.c>.e { |
| color: black; |
| } |
| .e:is(.b+.f, :is(.c>.e, .g)) { |
| color: red; |
| } |
| .c>.e { |
| color: black; |
| } |
| </style> |
| </head> |
| <body> |
| <div class="a"> |
| </div> |
| <div class="b" id="b2"> |
| </div> |
| <div class="c" id="c2"> |
| <div class="e"> |
| </div> |
| <div class="d" id="d1"> |
| Yellow |
| </div> |
| </div> |
| <div class="a"> |
| </div> |
| <div class="c" id="c2"> |
| <div class="e" id="e1"> |
| Red |
| </div> |
| </div> |
| <script> |
| |
| var red = "rgb(255, 0, 0)"; |
| var yellow = "rgb(255, 255, 0)"; |
| |
| test(() => { |
| assert_equals(getComputedStyle(d1).color, yellow); |
| assert_equals(getComputedStyle(d1).fontSize, "20px"); |
| assert_equals(getComputedStyle(d1).width, "10px"); |
| }, "Test nested :is() chooses highest specificity for class outside :is()."); |
| |
| test(() => { |
| assert_equals(getComputedStyle(e1).color, red); |
| }, "Test nested :is() specificity for class within arguments."); |
| |
| </script> |
| </body> |
| </html> |
