HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>scrollTo smooth</title>
  <style>
    body { font-family: sans-serif; margin: 1rem; }
    #box { width: 220px; height: 140px; overflow: auto; border: 2px solid #0f766e; border-radius: 8px; background: #f0fdfa; }
    .content { width: 500px; height: 500px; padding: 1rem; }
    button { margin-top: 0.75rem; padding: 0.5rem 1rem; cursor: pointer; }
  </style>
</head>
<body>
  <div id="box"><div class="content">Smooth scrollTo top: 100, left: 100.</div></div>
  <button type="button" id="smooth">Smooth scrollTo</button>
  <p id="out">top: 0, left: 0</p>
  <script>
    var element = document.getElementById("box");
    element.addEventListener("scroll", function () { document.getElementById("out").textContent = "top: " + element.scrollTop + ", left: " + element.scrollLeft; });
    document.getElementById("smooth").addEventListener("click", function () { element.scrollTo({ top: 100, left: 100, behavior: "smooth" }); });
  </script>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

Element.scrollTo — smooth options (Try It)