| <!DOCTYPE html> |
| <html> |
| <head> |
| <style> |
| .test { |
| width: 100px; |
| height: 25px; |
| background: red; |
| } |
| </style> |
| </head> |
| <body> |
| <p>Test passes if you see a single 100px by 100px green box below.</p> |
| <div id="host1" class="test"></div> |
| <div id="host2" class="test"></div> |
| <div id="host3" class="test"></div> |
| <div id="host4" class="test" attr="red"></div> |
| <script> |
| |
| var host1 = document.getElementById('host1'); |
| host1.attachShadow({mode: 'closed'}).innerHTML = ` |
| <style> |
| :host(.green) { |
| background: green !important; |
| } |
| </style> |
| `; |
| |
| getComputedStyle(host1).backgroundColor; |
| host1.classList.toggle('green'); |
| |
| var host2 = document.getElementById('host2'); |
| host2.attachShadow({mode: 'closed'}).innerHTML = ` |
| <style> |
| :host(#greenID) { |
| background: green !important; |
| } |
| </style> |
| `; |
| |
| getComputedStyle(host2).backgroundColor; |
| host2.id = 'greenID'; |
| |
| var host3 = document.getElementById('host3'); |
| host3.attachShadow({mode: 'closed'}).innerHTML = ` |
| <style> |
| :host([greenAttr]) { |
| background: green !important; |
| } |
| </style> |
| `; |
| |
| getComputedStyle(host3).backgroundColor; |
| host3.setAttribute('greenAttr', ''); |
| |
| var host4 = document.getElementById('host4'); |
| host4.attachShadow({mode: 'closed'}).innerHTML = ` |
| <style> |
| :host([attr=green]) { |
| background: green !important; |
| } |
| </style> |
| `; |
| |
| getComputedStyle(host4).backgroundColor; |
| host4.setAttribute('attr', 'green'); |
| |
| </script> |
| </body> |
| </html> |
