HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>wheel zoom</title>
  <style>
    body {
      min-height: 100vh;
      margin: 0;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 12px;
      font-family: system-ui, sans-serif;
    }
    #zoom-box {
      width: 105px;
      height: 105px;
      background: #ccddff;
      padding: 5px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      user-select: none;
    }
  </style>
</head>
<body>
  <div id="zoom-box">Scale me with your mouse wheel.</div>
  <pre id="out">scale=1.00</pre>
  <script>
    var scale = 1;
    var el = document.querySelector("#zoom-box");
    var out = document.getElementById("out");

    function zoom(event) {
      event.preventDefault();
      scale += event.deltaY * -0.01;
      scale = Math.min(Math.max(0.125, scale), 4);
      el.style.transform = "scale(" + scale + ")";
      out.textContent = "scale=" + scale.toFixed(2);
    }

    el.addEventListener("wheel", zoom, { passive: false });
  </script>
</body>
</html>

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Element wheel — scale zoom (Try It)