| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Dynamically changing HTMLStyleElement.media should change the rendering accordingly</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-style-element"> |
| <style> |
| span { |
| color: red; |
| } |
| </style> |
| <style id="text-style" media="none"> |
| span { |
| color: green; |
| } |
| </style> |
| <style id="body-style" media="aural"> |
| body { |
| color: green; |
| } |
| </style> |
| </head> |
| <body> |
| <span>text</span> |
| <script> |
| test(function() { |
| var element = document.querySelector("span"); |
| assert_equals(getComputedStyle(element).color, "rgb(255, 0, 0)"); |
| document.getElementById("text-style").media = 'all'; |
| assert_equals(getComputedStyle(element).color, "rgb(0, 128, 0)"); |
| }, "change media value dynamically"); |
| |
| test(function() { |
| var style = document.getElementById("body-style"); |
| assert_not_equals(getComputedStyle(document.querySelector("body")).color, "rgb(0, 128, 0)"); |
| style.removeAttribute("media"); |
| assert_equals(getComputedStyle(document.querySelector("body")).color, "rgb(0, 128, 0)"); |
| }, "removing media attribute"); |
| </script> |
| </body> |
| </html> |