我希望我的下拉菜单在我单击其中的项目时处于活动状态,换句话说,服务一词处于活动状态。我该怎么做?
<nav class="navbar navbar-light navbar-expand-xl">
<a class="navbar-brand" href="#"><img src="" alt=""/></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#"> Home</a>
</li>
<li class="nav-item dropdown">
<a
class="nav-link dropdown-toggle"
href="#"
id="navbarDropdown"
role="button"
data-toggle="dropdown"
aria-haspopup="true"
aria-expanded="false"
>
Services
</a>
<div class="dropdown-menu active" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#" id="active"
>Lala</a>
<a class="dropdown-item" href="#"
>Haha</a
>
</div>
</li>
</ul>
</div>
</nav>
答案 0 :(得分:0)
尝试在你的 li 上设置 active class
<!--- <li class="nav-item dropdown active">--->
<li class="nav-item dropdown active">
<a
class="nav-link dropdown-toggle"
href="#"
id="navbarDropdown"
role="button"
data-toggle="dropdown"
aria-haspopup="true"
aria-expanded="false"
>
Services
</a>
<div class="dropdown-menu active" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#" id="active"
>Lala</a>
<a class="dropdown-item" href="#"
>Haha</a
>
</div>
</li>