doc_mutations_add_remove_immediately.html

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<!DOCTYPE html>

<html lang="en">

  <head>

    <meta charset="UTF-8">

  </head>

  <body>

    <div></div>

    <script>

    "use strict";

    // This function is called from test.

    // eslint-disable-next-line

    function startMutation() {

      const target = document.querySelector("div");

      const animation = target.animate({ opacity: [1, 0] }, 100000);

      animation.currentTime = 1;

      animation.cancel();

    </script>

  </body>

</html>