我无法让我的下拉菜单正常工作。我可以让导航栏完美显示，但是当我单击“下拉菜单”(其中一个)时，它不显示下拉菜单。我曾尝试查看有关此问题的其他帖子，但没有任何解决每个人问题的方法。 这是代码
<head>
<meta charset="UTF-8">
<title>Landing Page</title>
<meta http-equiv="X-UA-COMPATIBLE" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<script type="javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.0/jquery.js"></script>
<script type="javascript" src="dist/js/bootstrap.js"></script>
<script type="javascript">
$(document).ready(function() {
$(".dropdown-toggle").dropdown();
});
</script>
<link href="dist/css/bootstrap.css" rel="stylesheet">
<link href="styles.css" rel="stylesheet">
</head>
<body>
<div class="navbar-wrapper"><!-- navbar start -->
<div class="container">
<nav class="navbar navbar-inverse navbar-static-top">
<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="#">Project name</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a> </li>
<li><a href="#about">About</a> </li>
<li><a href="#about">Contact</a> </li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="true">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li role="separator" class="divider"></li>
<li class="dropdown-header">Nav header</li>
<li><a href="#">Separated link</a></li>
<li><a href="#">One more separated link</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
</div>
</div><!-- navbar end -->
<!-- Placed at the end of the document so the pages load faster -->
</body>
最佳答案
在我的例子中，我加载了两次 bootstrap JS。删除了重复的一个，它起作用了。
关于javascript - bootstrap 下拉菜单打不开，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35240048/