HTML_CSS_Effects/parallax__demo.html at main · smartbasanta/HTML_CSS_Effects · GitHub

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<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="./style.css" />
    <title>VanillaScroll</title>
  </head>

  <style>
    body {
      margin: 0;
      height: 100vh;
      font-size: 5em;
      font-family: "Montserrat";
      font-weight: bold;
      overflow-x: hidden;
    }

    section {
      height: 100%;
      overflow: hidden;
      overflow-x: hidden;
    }

    ul {
      list-style-type: none;
      padding: 0;
      margin: 0;
      display: grid;
      grid-template-columns: repeat(3, auto);
      justify-content: center;
      align-items: middle;
      place-items: center;
      height: 100vh;
    }

    span {
      width: 110px;
      height: 110px;
      position: absolute;
      bottom: 1rem;
      left: 1rem;
      background: black;
      border-radius: 50%;
    }
  </style>
  <body>
    <section>
      <ul>
        <li class="scroll" data-rate="-2">Par</li>
        <li>ral</li>
        <li
          class="scroll"
          data-direction="horizontal"
          data-rateY="2"
          data-rateX="2"
        >
          lax
        </li>
      </ul>
      <span
        class="scroll"
        data-direction="horizontal"
        data-rateY="1"
        data-rateX="2"
      ></span>
    </section>

    <section></section>
  </body>

  <script>
    window.addEventListener("scroll", function (e) {
      const target = document.querySelectorAll(".scroll");

      let length = target.length; //length is the number of elements in the array

      for (let index = 0; index < length; index++) {
        let position = window.pageYOffset * target[index].dataset.rate;
        if (target[index].dataset.direction === "horizontal") {
          positionX = window.pageYOffset * target[index].dataset.ratex;
          positionY = window.pageYOffset * target[index].dataset.ratey;
          target[index].style.transform =
            "translate3d( " + positionX + "px," + positionY + "px, 0)";
        } else {
          target[index].style.transform =
            "translate3d(0, " + position + "px, 0)";
        }
      }
    });
  </script>
</html>