36 lines
1.1 KiB
HTML
36 lines
1.1 KiB
HTML
<!-- Quirks mode -->
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<html>
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<head>
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<title>ScrollTimeline default source in quirks mode</title>
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<link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#dom-scrolltimeline-scrolltimeline">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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/* This is just to make it possible for #body1 to be
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"potentially scrollable".
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https://drafts.csswg.org/cssom-view/#potentially-scrollable */
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html {
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overflow: hidden;
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}
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</style>
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</head>
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<body id=body1></body>
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<script>
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test(() => {
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try {
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assert_equals(document.scrollingElement.id, 'body1');
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assert_equals(new ScrollTimeline({}).source, body1);
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// Make #body1 "potentially scrollable". This causes the scrollingElement
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// of the document to become null.
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//
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// https://drafts.csswg.org/cssom-view/#dom-document-scrollingelement
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body1.style = 'overflow:scroll';
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assert_equals(new ScrollTimeline({}).source, null);
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} finally {
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body1.style = '';
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}
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}, 'Style of <body> is reflected in source attribute in quirks mode');
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</script>
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</html>
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