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