下拉菜單懸停在Bootstrap導航欄

Question

我使用Bootstrap導航欄的菜單，我已經添加下拉菜單，子菜單下，我想打開懸停子菜單，因爲它是點擊，我用一些方法，但沒有它正常工作，我的代碼如下：

<nav class="navbar navbar-default navbar-static-top"> 
<div class="container"> 
    <div class="navbar-header"> 
     <!-- Collapsed Hamburger --> 
     <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#app-navbar-collapse"> 
      <span class="sr-only">Toggle Navigation</span> 
      <span class="icon-bar"></span> 
      <span class="icon-bar"></span> 
      <span class="icon-bar"></span> 
     </button> 

     <!-- Branding Image --> 
     <div class="logo-container"> 
      <a class="navbar-brand" href="{{ url('/home') }}"> 
       {{-- {{ config('app.name', 'Laravel') }} --}} 
       <img src="{{URL::asset('/')}}Images/group_65.jpg" class="img-responsive logo-images imgcenter"> 
      </a> 
     </div>      
    </div> 

    <div class="collapse navbar-collapse" id="app-navbar-collapse" style="margin-left: 150px"> 
     <!-- Left Side Of Navbar --> 
     <ul class="nav navbar-nav main-menu"> 
      <li class="dropdown"> 
       <a class="dropdown-toggle" data-toggle="dropdown" href="#">My Classes<span class="caret"></span></a> 
       <ul class="dropdown-menu"> 
        <li><a href="#">Change Class</a></li> 
        <li><a href="#">Groups</a></li> 
       </ul> 
      </li> 
      <li><a href="">Roster</a></li> 
      <li class="dropdown"> 
       <a class="dropdown-toggle" data-toggle="dropdown" href="#">Admin<span class="caret"></span></a> 
       <ul class="dropdown-menu">      
        <li class="dropdown-submenu"> 
         <a class="" href="#">Manage Users</a> 
         <ul class="dropdown-menu"> 
          <li><a href="#">All Users</a></li> 
          <li><a href="#">Admin</a></li> 
         </ul> 
        </li> 
        <li><a href="#">Programs</a></li> 
        <li><a href="#">Documents</a></li> 
        <li class="dropdown-submenu"> 
         <a class="" href="#">Gallery</a> 
         <ul class="dropdown-menu"> 
          <li><a href="#">Calendar</a></li> 
          <li><a href="#">Events</a></li> 
          <li><a href="#">Holidays</a></li> 
         </ul> 
        </li> 
        <li><a href="#">Staff Attendance</a></li> 
        <li><a href="#">Payroll</a></li> 
        <li><a href="#">Gallery</a></li> 
        <li><a href="#">Food</a></li> 

       </ul> 
       <li><a href="">SoCo Help</a></li> 
      </li> 
     </ul> 

     <!-- Right Side Of Navbar --> 
     <ul class="nav navbar-nav navbar-right"> 
      <!-- Authentication Links --> 
      @if (Auth::guest()) 
       <li><a href="{{ route('login') }}">Login</a></li> 
       <li><a href="{{ route('register') }}">Register</a></li> 
      @else 

       <li class="dropdown"> 
        <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false"> 
         {{-- {{ Auth::user()->username }} <span class="caret"></span> --}} 
         <img class="avtar" src="uploads/profile/{{Auth::user()->user_profile_pic}}" style="height: 19px;"> 
         {{ Auth::user()->first_name}} {{Auth::user()->last_name }}<span class="caret"></span> 
        </a> 

        <ul class="dropdown-menu" role="menu"> 
         <li> 
          <a href="{{ route('logout') }}" 
           onclick="event.preventDefault(); 
             document.getElementById('logout-form').submit();"> 
           {{-- <i class="fa fa-fw fa-sign-out"> Logout</i> --}} 
           <i class="glyphicon glyphicon-log-out"></i> Logout 
          </a> 

          <form id="logout-form" action="{{ route('logout') }}" method="POST" style="display: none;"> 
           {{ csrf_field() }} 
          </form> 
         </li> 
        </ul> 
       </li> 
      @endif 
     </ul> 
    </div> 
</div> 

我添加腳本下拉子菜單爲

$('.dropdown-submenu a').on("click", function(e){      
        $(this).next('ul').toggle(); 
        e.stopPropagation(); 
        e.preventDefault();      
      }); 

那麼什麼是實現這一目標的正確方法？它也應該爲崩潰而工作。

Answer 1

您可以使用它的jQuery。在盤旋<li>時，找到.dropdown-menu這是子菜單列表並使其fadeIn和fadeOut。

$('ul.nav li.dropdown').hover(function() { 
    $(this).find('.dropdown-menu').fadeIn(500); 
}, 
function() { 
    $(this).find('.dropdown-menu').fadeOut(500); 
});