引导折叠菜单，单击时无法打开答案

【问题标题】：bootstrap collapsed menu, does not open on click引导折叠菜单，单击时无法打开
【发布时间】：2017-07-23 06:18:57
【问题描述】：

好的，所以我已经阅读了一堆关于此的主题，其中没有一个帮助我解决了我面临的最重要的问题。问题是我已经建立了一个引导菜单，最基本的一个来自 getbootstrap.com 的示例。老实说，我现在不明白我做错了什么，并遵循了我应该在加载 bootstrap.js 之前加载我的 jQuery.js 的建议。 Here is a link to a jsfiddle of the problem

这里有我用于当前正在尝试生成函数的页面的完整代码。

<!DOCTYPE html>
<html>
<head>
  <title>WITHELD</title>
  <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.css">
  <script rel="javascript" style="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.js"></script>
  <script rel="javascript" style="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.js"></script>
  <link rel="stylesheet" type="text/css" href="ext/style.css">
  <script rel="javascript" type="text/javascript" src="ext/script.js"></script>
</head>
<body>
  <div class="container-fluid">
    <div class="row">
      <div class="col-md-2">
      </div>
      <div class="col-md-8">
        <a href="#">
        <img src="ext/img/head.jpg" style="max-height:100px;">
        </a>
      </div>
      <div class="col-md-2">
      </div>
    </div><!--/.row/ Head-->
    <nav class="navbar navbar-default">
      <div class="container-fluid">
        <!-- Brand and toggle group -->
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="collapsemen" 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="#">Brand</a>
        </div>
        <!-- Collect Nav links, forms and other content. -->
        <div class="collapse navbar-collapse" id="collapsemen">
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">Link <span class="sr-only"></span></a></li>
            <li><a href="#">Link</a></li>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-hashpopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li><a href="#">Action</a></li>
                <li><a href="#">Blacktion</a></li>
                <li><a href="#">Seperated</a></li>
              <li role="separator" class="divider"></li>
                <li><a href="boop!"></a></li>
              </ul>
            </li>
          </ul>
        </div>
      </div>
    </nav>
  </div><!--/.Container-fluid/ Content wrapper.-->
</body>
</html>

【问题讨论】：

标签： jquery twitter-bootstrap menu collapse

【解决方案1】：

updted fiddle 您忘记将 # 添加到 data-target 属性。

工作代码 sn-p

<!DOCTYPE html>
<html>
<head>
  <title>Din Socialjurist</title>
  <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.css">
  <script rel="javascript" style="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.js"></script>
  <script rel="javascript" style="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.js"></script>
  <link rel="stylesheet" type="text/css" href="ext/style.css">
  <script rel="javascript" type="text/javascript" src="ext/script.js"></script>
</head>
<body>
  <div class="container-fluid">
    <div class="row">
      <div class="col-md-2">
      </div>
      <div class="col-md-8">
        <a href="#">
        <img src="ext/img/head.jpg" style="max-height:100px;">
        </a>
      </div>
      <div class="col-md-2">
      </div>
    </div><!--/.row/ Head-->
    <nav class="navbar navbar-default">
      <div class="container-fluid">
        <!-- Brand and toggle group -->
        <div class="navbar-header">
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#collapsemen" 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="#">Brand</a>
        </div>
        <!-- Collect Nav links, forms and other content. -->
        <div class="collapse navbar-collapse" id="collapsemen">
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">Link <span class="sr-only"></span></a></li>
            <li><a href="#">Link</a></li>
            <li class="dropdown">
              <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-hashpopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
              <ul class="dropdown-menu">
                <li><a href="#">Action</a></li>
                <li><a href="#">Blacktion</a></li>
                <li><a href="#">Seperated</a></li>
              <li role="separator" class="divider"></li>
                <li><a href="boop!"></a></li>
              </ul>
            </li>
          </ul>
        </div>
      </div>
    </nav>
  </div><!--/.Container-fluid/ Content wrapper.-->
</body>
</html>

【讨论】：