37 lines
794 B
HTML
37 lines
794 B
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<style>
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@keyframes anim {
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0% { background-color: red; }
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100% { background-color: red; }
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}
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#target.x::before,
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#target.y::before {
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content: "";
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position: absolute;
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width: 100px;
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height: 100px;
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}
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#target.x::before {
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animation: anim 100s infinite;
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}
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</style>
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<div id="target"></div>
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<script>
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var target = document.getElementById('target');
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requestAnimationFrame(() => {
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// Create ::before, start animation
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target.className = 'x';
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requestAnimationFrame(() => {
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// Remove ::before, stop animation
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target.className = '';
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requestAnimationFrame(() => {
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// Create ::before, should not be animating
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target.className = 'y';
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document.documentElement.classList.remove('reftest-wait');
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});
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});
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});
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</script>
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