我一直在寻找不同的解决方案，但到目前为止没有一个能帮助我。我的下拉菜单不起作用，因为数据切换和数据目标没有“被识别”（至少这就是我认为它不起作用的原因）。我似乎找不到解决方案，所以我希望这里有人可以帮助我。这是代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>Bootstrap 101 Template</title>
<!-- Bootstrap -->
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
<style>
.box{
background-color: #d3d3d3;
border: 1px solid gray;
}
</style>
</head>
<body>
<div class="navbar navbar-inverse">
<div class="container">
<div class="navbar-header">
<a href="" class="navbar-brand">My Website</a>
<button type="button" class="navbar-toggle" datatoggle="collapse" data-target=".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>
</div>
<div class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="">Page 1</a></li>
<li><a href="">Page 1</a></li>
<li><a href="">Page 1</a></li>
</ul>
</div>
</div>
</div>
<h1>Hello, world!</h1>
<div class="container">
<div class="row">
<div class="col-md-6 box">Content</div>
<div class="col-md-6 box">Content</div>
</div>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
</body>
</html>
https://jsbin.com/jumuka/edit?html,输出 https://jsbin.com/jumuka/edit?html,output
你有datatoggle="collapse"你需要data-toggle="collapse".
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