我的 HTML 文件中有以下代碼：<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"><div class="list-group list-group-flush">  <a href="javascript: void(0)" data-parent=".list-group" class="list-group-item list-group-item-action filter-options" data-group="all"><b>Home</b></a>  <a data-toggle="collapse" href="#itSection" class="list-group-item list-group-item-action"><b>IT</b></a>  <div id="itSection" class="list-group collapse">    <a href="javascript: void(0)" class="list-group-item list-group-item-action menu2 filter-options" data-group="devops">DevOps</a>  </div>  <a data-toggle="collapse" href="#pdSection" class="list-group-item list-group-item-action"><b>Product                    Development</b></a>  <div id="pdSection" class="list-group collapse">    <a href="javascript: void(0)" class="list-group-item list-group-item-action menu2 filter-options" data-group="travelandcppd">Travel &                    CP</a>    <a href="javascript: void(0)" class="list-group-item list-group-item-action menu2 filter-options" data-group="sfandcppd">SF &                    CP</a>  </div>  <a href="javascript: void(0)" class="list-group-item list-group-item-action filter-options" data-group="management"><b>Management</b></a>  <a href="javascript: void(0)" class="list-group-item list-group-item-action filter-options" data-group="marketing"><b>Marketing</b></a></div><script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"></script><script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script><script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>正如您在代碼中看到的，我有幾個(gè)帶有子菜單的部分。如果單擊主頁(yè)，我正在嘗試使用 data-parent 屬性折疊所有展開的項(xiàng)目。你能在這里指出我正確的方向嗎？