css - "dropdown-toggle"默认关闭

Question

我正在使用 bootstrap 在 mijn 应用程序中有一个侧面导航栏。我希望下拉菜单默认打开，但我做不到...

我的代码:

<nav class="navbar navbar-default sidebar" role="navigation">
        <div class="container-fluid">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-sidebar-navbar-collapse-1">
                    <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 class="collapse navbar-collapse" id="bs-sidebar-navbar-collapse-1">
                <ul class="nav navbar-nav">
                    <li><a href="{{ url('/') }}">Home of   {{ Auth::user()->name }}<span style="font-size:16px;"></span></a></li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">Input <span class="caret"></span><span style="font-size:16px;"></span></a>
                        <ul class="dropdown-menu forAnimate" role="menu">
                            <li><a href="{{ url('/dashboard/input') }}">Form</a></li>                                
                        </ul>
                    </li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown" >Results <span class="caret"></span><span style="font-size:16px;"></span></a>
                        <ul class="dropdown-menu" role="menu">
                            <li><a href="{{ url('/dashboard/result/overview') }}">Results</a></li>

                        </ul>
                    </li>

                    <li><a href="{{ url('/') }}">Tools<span></span></a></li>

                    <li><a href="{{ url('/documentation') }}">Documentation<span></span></a></li>
                    @endif
                </ul>
            </div>
        </div>
    </nav>

Answer 1

努力改变

<li class="dropdown">

到

<li class="dropdown open">