37 lines
1.5 KiB
HTML
37 lines
1.5 KiB
HTML
<!doctype html>
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<title><link disabled>, HTMLLinkElement.disabled and CSSStyleSheet.disabled interactions (alternate)</title>
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<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
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<link rel="author" title="Mozilla" href="https://mozilla.org">
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<link rel="help" href="https://html.spec.whatwg.org/#attr-link-disabled">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<link title="alt" rel="alternate stylesheet" disabled href="data:text/css,html { background: green }">
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<script>
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function assert_applies(applies) {
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(applies ? assert_equals : assert_not_equals)(getComputedStyle(document.documentElement).backgroundColor, "rgb(0, 128, 0)");
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}
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const link = document.querySelector("link[disabled]");
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async_test(function(t) {
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assert_true(link.disabled);
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link.onload = t.step_func_done(function() {
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assert_equals(document.styleSheets.length, 1);
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let sheet = document.styleSheets[0];
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assert_equals(sheet.ownerNode, link);
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assert_applies(true);
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link.disabled = true;
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assert_equals(sheet.ownerNode, null);
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assert_false(sheet.disabled);
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assert_applies(false);
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assert_true(link.hasAttribute("disabled"));
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assert_equals(document.styleSheets.length, 0);
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});
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link.disabled = false;
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assert_true(!link.hasAttribute("disabled"));
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assert_false(link.disabled);
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}, "HTMLLinkElement.disabled reflects the <link disabled> attribute, and behaves consistently, when the sheet is an alternate");
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</script>
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