HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>onscroll — scrollable div</title>

  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 .75rem;font-size:1.25rem;color:#0f172a}#panel{height:150px;overflow:auto;border:1px solid #cbd5e1;border-radius:8px;padding:.75rem 1rem;background:#fff}.content{height:500px}#out{margin-top:.75rem;padding:.75rem 1rem;border-radius:8px;font-size:.875rem;font-weight:600;max-width:420px;background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}.hint{font-size:.875rem;color:#64748b}</style>

</head>

<body>

  <h1>onscroll on a scrollable div</h1>

  <p class=hint>Scroll inside the box below — the label updates.</p>



  <div id=panel onscroll=showScroll()>

    <div class=content>

      <p>Scroll inside this box.</p>

      <p>More content here to make it scrollable…</p>

    </div>

  </div>

  <p id=out>Scrolled 0 px</p>



  <script>function showScroll(){var e=document.getElementById("panel");document.getElementById("out").textContent="Scrolled "+e.scrollTop+" px inside the box",document.getElementById("out").style.background="#f0fdf4",document.getElementById("out").style.borderColor="#bbf7d0",document.getElementById("out").style.color="#166534"}</script>

</body>

</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

HTML onscroll Attribute — scrollable div