下拉菜单 – Bootstrap4下拉列表仅在第二次单击时有效

嘿伙计们,我正在研究一个使用bootstrap4的 django项目,而且我有一个问题就是下拉切换器……

切换器仅在第二个链接后切换下拉菜单！

我做错了什么？

这是我的下拉HTML代码：

<li class="nav-item dropdown show">
                <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                    Dropdown Toggler
                </a>
                <div class="dropdown-menu" role="menu" aria-labelledby="navbarDropdown">
                 <a class="dropdown-item">Link 1</a>
                 <a class="dropdown-item">Link 2</a>
                </div>
            </li>

你需要使用这样的切换,并将数据目标分配给下拉菜单中的id

运用

data-target=”#navbarDropdown”

<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarDropdown" aria-controls="navbarDropdown" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>

然后将该ID分配给菜单

<li class="nav-item dropdown show">
            <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarDropdown" aria-controls="navbarDropdown" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
            <div id="navbarDropdown" class="dropdown-menu"  role="menu" aria-labelledby="navbarDropdown">
             <a class="dropdown-item">Link 1</a>
             <a class="dropdown-item">Link 2</a>
            </div>
        </li>