HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>detach selector filter</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 520px; }
    li { padding: 6px 8px; margin: 4px 0; border-radius: 4px; }
    li.active { background: #dcfce7; }
    li.inactive { background: #fee2e2; color: #991b1b; }
    button { margin-top: 12px; padding: 10px 16px; background: #dc2626; color: #fff; border: none; border-radius: 6px; cursor: pointer; }
    #archive { margin-top: 16px; padding: 12px; border: 2px dashed #94a3b8; min-height: 40px; }
    h3 { font-size: 14px; color: #64748b; margin: 16px 0 6px; }
  </style>
</head>
<body>
  <ul id="todo-list">
    <li class="active">Buy milk</li>
    <li class="inactive">Old draft task</li>
    <li class="active">Walk dog</li>
    <li class="inactive">Expired reminder</li>
  </ul>
  <button type="button" id="go">Detach .inactive items</button>
  <h3>Archive (detached items)</h3>
  <ul id="archive"></ul>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("#go").on("click", function() {
      var stashed = $("#todo-list li").detach(".inactive");
      $("#archive").append(stashed);
    });
  </script>
</body>
</html>

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jQuery .detach(selector) — filter inactive items (Try It)