HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>notification feed prepend</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 480px; }
    ul { padding: 0; margin: 0; list-style: none; border: 1px solid #cbd5e1; border-radius: 8px; overflow: hidden; }
    li { padding: 10px 12px; border-bottom: 1px solid #e2e8f0; }
    li.alert { background: #dbeafe; }
    li.old { background: #f8fafc; color: #64748b; }
    button { margin-bottom: 12px; padding: 10px 16px; background: #2563eb; color: #fff; border: none; border-radius: 6px; cursor: pointer; }
    #hint { color: #64748b; font-size: 14px; margin-top: 10px; }
  </style>
</head>
<body>
  <button type="button" id="add">Add notification</button>
  <ul id="notifications">
    <li class="old">Older notification</li>
  </ul>
  <p id="hint">Newest-first feed — prepend puts items at the top.</p>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    var count = 0;
    $("#add").on("click", function() {
      count++;
      var msg = "New alert #" + count + " — just now";
      $("<li class='alert'>").text(msg).prependTo("#notifications");
      $("#hint").text("Alert prepended to top of #notifications.");
    });
  </script>
</body>
</html>

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jQuery .prepend() — notification feed (Try It)