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51 lines
1.4 KiB
HTML
51 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<title>content animation</title>
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<link rel="help" href="https://drafts.csswg.org/css-content/#content-property">
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<meta name="test" content="box-shadow supports animation">
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<link rel="author" href="mailto:graouts@apple.com" title="Antoine Quint">
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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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.target::after {
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content: "default";
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}
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@keyframes content-animation {
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from { content: "from" }
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to { content: "to" }
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}
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.target.animated::after {
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animation: content-animation 1s paused linear forwards;
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}
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</style>
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<body>
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<div class="target"></div>
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<script>
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test(function() {
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const target = document.querySelector(".target");
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const style = getComputedStyle(target, "::after");
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assert_equals(style.content, '"default"', "Before the animation is applied.");
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target.classList.add("animated");
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const animation = target.getAnimations({ subtree: true })[0];
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const testContentAtTime = (time, expected) => {
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animation.currentTime = time;
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assert_equals(style.content, `"${expected}"`, `Check the animated value at time = ${time}ms`);
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};
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testContentAtTime(0, 'from');
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testContentAtTime(499, 'from');
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testContentAtTime(500, 'to');
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testContentAtTime(999, 'to');
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testContentAtTime(1000, 'to');
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}, "The content property can be animated with a discrete animation type.");
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</script>
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</body>
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