1333539-1.html - mozsearch

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<!DOCTYPE html>

<html class="reftest-wait">

<head>

<meta charset="UTF-8">

<script>

window.onload = function(){

  let body = document.getElementsByTagName("body")[0];

  let target = document.createElement("div");

  let anim1 = new Animation();

  let anim2 = new Animation();

  let effect = new KeyframeEffect(target, { opacity: [ 0, 1 ] }, 1000);

  body.appendChild(target);

  target.appendChild(document.createElement("meter"));

  anim1.startTime = 88;

  anim1.timeline = null;

  anim1.pause();

  anim1.effect = effect;

  anim2.effect = effect;

  anim1.effect = effect;

  // anim1, since it doesn't have a timeline, will remain pause-pending,

  // so just wait on anim2.

  anim2.ready.then(() => {

    document.documentElement.classList.remove("reftest-wait");

});

};

</script>

</head>

<body></body>

</html>