在下面的示例中，我有两个问题：
1。我正在使用collapse＆amp;的混合物drop-down显示子菜单。但是在这个例子中我有一个问题，当另一个子菜单打开时，我的子菜单不会自动关闭。
我不确定这种效果是否来自bs下拉列表。我用手风琴和数据父母测试了一些东西，但这并没有解决问题。
有没有外部JavaScript的解决方案？仅使用Bootstrap原生JS组件？
2。在狭窄的屏幕上，菜单会崩溃，但如果下拉菜单直接显示在菜单项下而不是ul的末尾，则会更好。
<script src="https://code.jquery.com/jquery-3.1.1.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-default">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#mynavbar" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="brand" href="#">
<span><img class="logo img-rounded" src="https://placeholdit.imgix.net/~text?txtsize=15&txt=Logo&w=100&h=100" alt="Logo"></span>
<span class="xs-hidden">Brand</span>
</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="mynavbar">
<div class="clearfix">
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="collapse" data-target="#section-a" aria-expanded="false" aria-controls="section-a">Section A <span class="caret"></span></a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="collapse" data-target="#section-b" aria-expanded="false" aria-controls="section-b">Section B <span class="caret"></span></a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="collapse" data-target="#section-c" aria-expanded="false" aria-controls="section-c">Section C <span class="caret"></span></a>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="collapse" data-target="#section-d" aria-expanded="false" aria-controls="section-d">Section D <span class="caret"></span></a>
</li>
</ul>
</div>
<div class="collapsible-menu">
<div class="collapse" id="section-a">
<ul class="nav nav-tabs nav-justified">
<li><a href="#">Item A.1</a>
</li>
<li><a href="#">Item A.1</a>
</li>
<li><a href="#">Item A.2</a>
</li>
<li><a href="#">Item A.3</a>
</li>
<li><a href="#">Item A.4</a>
</li>
<li><a href="#">Item A.5</a>
</li>
</ul>
</div>
</div>
<div class="collapsible-menu">
<div class="collapse" id="section-b">
<ul class="nav nav-tabs nav-justified">
<li><a href="#">Item B.1t</a>
</li>
<li><a href="#">Item B.2</a>
</li>
<li><a href="#">Item B.3</a>
</li>
</ul>
</div>
</div>
<div class="collapsible-menu">
<div class="collapse" id="section-c">
<ul class="nav nav-tabs nav-justified">
<li><a href="#">Item C.1</a>
</li>
<li><a href="#">Item C.2</a>
</li>
<li><a href="#">Item C.3</a>
</li>
<li><a href="#">Item C.4</a>
</li>
</ul>
</div>
</div>
<div class="collapsible-menu">
<div class="collapse" id="section-d">
<ul class="nav nav-tabs nav-justified">
<li><a href="#">Item D.1</a>
</li>
<li><a href="#">Item D.2</a>
</li>
<li><a href="#">Item D.3</a>
</li>
</ul>
</div>
</div>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid -->
</nav>
答案 0 :(得分：0)
好的，找到了自己的答案 - 只是想关闭这个帖子并展示解决方案：
/* Navbar Layout */
.navbar {
color: #000;
background-color: #fff;
margin-bottom:0px;
border: 0px;
border-bottom: 8px solid #c00;
}
/* Navbar Submenu Layout */
.mega-dropdown {
position: static !important;
}
.mega-dropdown-menu {
min-height: 50px;
width: 100%;
box-shadow: none;
-webkit-box-shadow: none;
border-radius: 0px;
border: 0px;
border-bottom: 8px solid #c00;
}
.mega-dropdown-menu > li > ul {
padding: 0;
margin: 1px;
}
.mega-dropdown-menu > li > ul > li {
list-style: none;
padding: 15px 0px;
}
.mega-dropdown-menu > li > ul > li > a {
display: block;
color: #222;
padding: 3px 5px;
}
.mega-dropdown-menu > li ul > li > a:hover,
.mega-dropdown-menu > li ul > li > a:focus {
color: #c00;
text-decoration: none;
}
.mega-dropdown-menu .dropdown-header {
font-size: 18px;
color: #ff3546;
padding: 5px 60px 5px 5px;
line-height: 30px;
}<script src="https://code.jquery.com/jquery-3.1.1.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-default">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="brand" href="<?php echo $Site->url() ?>">
<span><img class="img-rounded" src="https://placeholdit.imgix.net/~text?txtsize=12&txt=Logo&w=50&h=50" alt="Logo"></span>
<span>Brand</span>
</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<li class="dropdown mega-dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Section A</a>
<ul class="dropdown-menu mega-dropdown-menu">
<li class="col-sm-2"><a href="/verein/vorstand">Submenu 1</a></li>
<li class="col-sm-2"><a href="/verein/mitgliedschaft">Submenu 2</a></li>
<li class="col-sm-2"><a href="/verein/trainingsplan">Submenu 3</a></li>
<li class="col-sm-2"><a href="/verein/ansprechpartner">Submenu 4</a></li>
<li class="col-sm-2"><a href="/verein/anfahrt">Submenu 5</a></li>
<li class="col-sm-2"><a href="/verein/sonstiges">Submenu 6</a></li>
</ul>
</li>
<li class="dropdown mega-dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Section B</a>
<ul class="dropdown-menu mega-dropdown-menu">
<li class="col-sm-4"><a href="#">Submenu 1</a></li>
<li class="col-sm-4"><a href="#">Submenu 2</a></li>
<li class="col-sm-4"><a href="#">Submenu 3</a></li>
</ul>
</li>
<li class="dropdown mega-dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Section C</a>
<ul class="dropdown-menu mega-dropdown-menu">
<li class="col-sm-3"><a href="#">Submenu 1</a></li>
<li class="col-sm-3"><a href="#">Submenu 2</a></li>
<li class="col-sm-3"><a href="#">Submenu 3</a></li>
<li class="col-sm-3"><a href="#">Submenu 4</a></li>
</ul>
</li>
<li class="dropdown mega-dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Section D</a>
<ul class="dropdown-menu mega-dropdown-menu">
<li class="col-sm-4"><a href="#">Submenu 1</a></li>
<li class="col-sm-4"><a href="#">Submenu 2</a></li>
<li class="col-sm-4"><a href="#">Submenu 3</a></li>
</ul>
</li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>