javascript - 导航栏折叠菜单不适用于手机和平板电脑视口(viewport)

Question

我在较小的 viewport 上遇到了 bootstrap3 navbar-menu 问题。当我在检查器中进入响应模式并单击 汉堡包 图标时，我没有看到任何交互，调试工具没有显示任何错误，而且我有所有标准的 bootstrap3 navbar collapse 类代码以支持更小的viewport，我只是忽略了一些东西。

<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
  <div class="container">
    <div class="navbar-header">
      <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>
      <a class="navbar-brand" href="{% url 'index' %}"><img src="static/img/SNYClogo.png" height=50 width=110></a>
    </div>
    <div class="navbar-collapse collapse">
        <ul id="navbar" class="nav navbar-nav navbar-right">
            <li><a href="{% url 'index' %}">Home</a></li>
            <li><a href="#">Apartments</a></li>
            <li><a href="#">About</a></li>
        {% if user.is_authenticated %}
            <li><a id="logout" href="/accounts/logout">Logout</a></li>
        {% else %}
            <li class="pull-right" id="showlogin"><a href="#"><button type="button" class="btn btn-sm btn-info round">GET STARTED</button></a></li>
        {% endif %}
            </ul>
    </div><!--/.navbar-collapse -->
  </div>
</nav>

有人可以检查这个JSFIDDLE ，并检查我的代码。

Answer 1

将 .navbar id 给父级 div 而不是 ul。

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>

<nav class="navbar navbar-default navbar-fixed-top" role="navigation">
      <div class="container">
        <div class="navbar-header">
          <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>
          <a class="navbar-brand" href="#"><img src="..." height=50 width=110></a>
        </div>
        <div id="navbar" class="navbar-collapse collapse">
            <ul class="nav navbar-nav navbar-right">
                <li><a href="{% url 'index' %}">Home</a></li>
                <li><a href="#">Apartments</a></li>
                <li><a href="#">About</a></li>
            {% if user.is_authenticated %}
                <li><a id="logout" href="/accounts/logout">Logout</a></li>
            {% else %}
                <li class="pull-right" id="showlogin"><a href="#"><button type="button" class="btn btn-sm btn-info round">GET STARTED</button></a></li>
            {% endif %}
                </ul>
        </div><!--/.navbar-collapse -->
      </div>
    </nav>

Fiddle