HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>.scroll() trigger</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 420px; }
    #target { height: 100px; overflow: scroll; border: 2px dashed #6366f1; border-radius: 8px; padding: 10px; margin-bottom: 12px; font-size: 14px; }
    #other { padding: 10px 16px; background: #6366f1; color: #fff; border: none; border-radius: 6px; cursor: pointer; margin-bottom: 12px; }
    #log { color: #4338ca; font-weight: 600; min-height: 40px; }
  </style>
</head>
<body>
  <div id="target">Scrollable panel content. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore.</div>
  <button type="button" id="other">Trigger with .scroll()</button>
  <div id="log">Click to fire no-argument .scroll().</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("#target").scroll(function() {
      $("#log").text("Handler for scroll called (triggered).");
    });
    $("#other").on("click", function() {
      $("#target").scroll();
    });
  </script>
</body>
</html>

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jQuery .scroll() — no-arg trigger (Try It)