我想知道是否有人知道为什么我的汉堡按钮不会在我的导航栏上下拉？我不确定我是否没有上传正确的 JS 文件还是什么？我的JS文件中也有一个滚动间谍功能。
<!-- Bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<!-- Optional Theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">
<link href="https://fonts.googleapis.com/css?family=Montserrat" rel="stylesheet">
<link rel="stylesheet" href="{% static 'socialnet/css/style.css' %}">
</head>
<body data-spy="scroll" data-target="#navbar-spy">
<nav role = "navigation" class = "navbar navbar-default">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbarCollapse" 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 = "navbar-brand" href = "{% url 'home' %}">Social Net</a>
</div>
<div class="navbar-spy">
<div class="collapse navbar-collapse">
<ul class = "nav navbar-nav pull-right">
{% if user.is_authenticated %}
<li><a href ="{% url 'posts:create' %}" class="btn btn-simple">Post</a></li>
<li><a href ="{% url 'groups:all' %}" class="btn btn-simple">Groups</a></li>
<li><a href ="{% url 'groups:create' %}" class="btn btn-simple">Create Group</a></li>
<li><a href ="{% url 'accounts:logout' %}" class="btn btn-simple">Logout</a></li>
{% else %}
<li><a href ="{% url 'groups:all' %}" class="btn btn-simple">Groups</a></li>
<li><a href ="{% url 'accounts:login' %}" class="btn btn-simple">Login</a></li>
<li><a href ="{% url 'accounts:signup' %}" class="btn btn-simple">Signup</a></li>
{% endif %}
</ul>
</div>
</div>
</div>
</nav>
<script src="https://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<script type="text/javascript" src="{% static 'socialnet/js/master.js' %}"></script>
</body>
</html>
您在<div class="collapse navbar-collapse">上缺少id="navbarCollapse"
这被<button>的data-target="#navbarCollapse"引用
<div class="navbar-spy">
<div class="collapse navbar-collapse" id="navbarCollapse">
<ul class = "nav navbar-nav pull-right">
{% if user.is_authenticated %}
<li><a href ="{% url 'posts:create' %}" class="btn btn-simple">Post</a></li>
<li><a href ="{% url 'groups:all' %}" class="btn btn-simple">Groups</a></li>
<li><a href ="{% url 'groups:create' %}" class="btn btn-simple">Create Group</a></li>
<li><a href ="{% url 'accounts:logout' %}" class="btn btn-simple">Logout</a></li>
{% else %}
<li><a href ="{% url 'groups:all' %}" class="btn btn-simple">Groups</a></li>
<li><a href ="{% url 'accounts:login' %}" class="btn btn-simple">Login</a></li>
<li><a href ="{% url 'accounts:signup' %}" class="btn btn-simple">Signup</a></li>
{% endif %}
</ul>
</div>
</div>