Answers for "animation on scroll javascript"

aos js

CSS
<link href="https://unpkg.com/[email protected]/dist/aos.css" rel="stylesheet">

JS
<script src="https://unpkg.com/[email protected]/dist/aos.js"></script>

INITIALIZE AOS:
<script>
  AOS.init();
</script>

animation on scroll css

svg {
  position: fixed; /* make sure it stays put so we can see it! */

  animation: rotate 1s linear infinite;
  /*animation-play-state: paused;*/
  animation-delay: calc(var(--scroll) * -1s);
}

aos css animation

<div data-aos="zoom-in-right"></div>