Animation: pause() メソッド

animation.pause();

// animation of the cupcake slowly getting eaten up
const nommingCake = document
  .getElementById("eat-me_sprite")
  .animate(
    [{ transform: "translateY(0)" }, { transform: "translateY(-80%)" }],
    {
      fill: "forwards",
      easing: "steps(4, end)",
      duration: aliceChange.effect.timing.duration / 2,
    },
  );

// doesn't actually need to be eaten until a click event, so pause it initially:
nommingCake.pause();

// An all-purpose function to pause the animations on Alice, the cupcake, and the bottle that reads "drink me."
const stopPlayingAlice = () => {
  aliceChange.pause();
  nommingCake.pause();
  drinking.pause();
};

// When the user releases the cupcake or the bottle, pause the animations.
cake.addEventListener("mouseup", stopPlayingAlice, false);
bottle.addEventListener("mouseup", stopPlayingAlice, false);