Question

我有一个正在使用Bootstrap 3.3.7的项目。我需要在导航栏中添加一个下拉菜单。

我以为自己的标记正确。但是，下拉菜单未按预期显示

这是我的代码

<nav class="navbar navbar-inverse navbar-fixed-top sticky-top" >
   <div class="container-fluid">
      <div class="navbar-header">
         <a class="navbar-brand" href="#">
         Business Name
         </a>
         <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
         <span class="sr-only">Toggle navigation</span>
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>
         </button>
      </div>
      <div id="navbar" class="navbar-collapse collapse">
         <ul class="nav navbar-nav navbar-right">
            <li class="dropdown notification-container">
               <a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
               Notifications
               <span class="notification-count badge">3</span>
               </a>
               <ul class="dropdown-menu dropdown-backdrop" style="width: 240px;">
                  <li class="p-2 border-bottom notification-message message-unread">
                     <a href="#"><small>Message 1</small></a>
                  </li>
                  <li class="p-2 border-bottom notification-message message-unread">
                     <a href="#"><small>Message 2</small></a>
                  </li>
                  <li class="p-2 border-bottom notification-message message-unread">
                     <a href="#"><small>Message 3</small></a>
                  </li>
               </ul>
            </li>
            <li class="nav-item">
               <div class="navbar-text mr-3 ml-1" style="margin-right: 12px; margin-left: 4px; "> Hello, Jake!</div>
            </li>
         </ul>
      </div>
      <!--/.navbar-collapse -->
   </div>
</nav>

我还用代码创建了一个提琴手，以显示单击https://jsfiddle.net/tsjLhvz2/时右上方的通知菜单如何不显示项目

如何在导航栏中打开菜单？

Answer 1

删除.dropdown-backdrop，出于某种原因，该类正在触发将您的列表从DOM中删除。

如何使用引导程序3.3.7在顶部导航栏中创建下拉菜单？

1 个答案: