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33 lines
1.3 KiB
HTML
33 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>Selectors: Change class to enable :hover</title>
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<link rel="author" title="Rune Lillesveen" href="futhark@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/selectors/#the-hover-pseudo">
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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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.affected:hover { color: green }
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#hoveredContents { display: contents }
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</style>
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<div id="hovered">Hover me - should become green</div>
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<div id="hoveredContents">
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<div id="hovered2">Hover me - should become green</div>
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</div>
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<script>
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function testElementGreen(test, element) {
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element.addEventListener("mouseover", test.step_func(event => {
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assert_equals(getComputedStyle(element).color, "rgb(0, 128, 0)");
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test.done();
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}));
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}
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// Setting the affected classes here makes the two elements go from never
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// reacting to hover to being affected by hover without changing computed
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// style.
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hovered.offsetTop;
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hovered.className = "affected";
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hoveredContents.className = "affected";
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async_test(t => { testElementGreen(t, hovered); }, "Hover #hovered element should make it go green");
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async_test(t => { testElementGreen(t, hovered2); }, "Hover #hoveredContents child should make it go green");
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</script>
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