崩溃内崩溃不起作用

时间:2017-02-18 23:58:52

标签: javascript jquery html css twitter-bootstrap

我不是一个自助专家(根本没有),我有点陷入困境,在另一个无法解决的崩溃中崩溃。

一个简单的崩溃运作良好:



<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<li>
  <a href="javascript:;" data-toggle="collapse" data-target="#demo"><i class="fa fa-fw fa-sitemap"></i> Vos sites <i class="fa fa-fw fa-caret-down"></i></a>
  <ul id="demo" class="collapse">
    <li>
      <a href="/main">Level 1</a>
    </li>
  </ul>
</li>
&#13;
&#13;
&#13;

它给出了这个:

enter image description here

但是当我做同样的事情在这个崩溃树中添加另一个级别时。

&#13;
&#13;
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<li>
  <a href="javascript:;" data-toggle="collapse" data-target="#demo"><i class="fa fa-fw fa-sitemap"></i> Vos sites <i class="fa fa-fw fa-caret-down"></i></a>
  <ul id="demo" class="collapse">
    <li>
      <a href="/main">Level 1</a>
    </li>
    <li>
      <a href="javascript:;" data-toggle="collapse" data-target="#demo_2"><i class="fa fa-fw fa-sitemap"></i> Level 2 <i class="fa fa-fw fa-caret-down"></i></a>
      <ul id="demo_2" class="collapse">
        <li>
          <a href="/main"> sublevel1</a>
        </li>
        <li>
          <a href="/main"> sublevel2</a>
        </li>
      </ul>
    </li>
  </ul>
</li>
&#13;
&#13;
&#13;

奇怪的是它给了这个!

enter image description here

有人可以告诉我为什么我没有和级别1一样显示次级?

COMPLETE

我正在使用Bootstrap 3

1 个答案:

答案 0 :(得分:1)

以下是引导程序3的工作示例 正如您所看到的,它完全按预期工作:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<ul>
<li>
  <a href="javascript:;" data-toggle="collapse" data-target="#demo"><i class="fa fa-fw fa-sitemap"></i> Vos sites <i class="fa fa-fw fa-caret-down"></i></a>
  <ul id="demo" class="collapse">
       <li>
           <a href="/main">Level 1</a>
       </li>
       <li>
           <a href="javascript:;" data-toggle="collapse" data-target="#demo_2"><i class="fa fa-fw fa-sitemap"></i> Level 2 <i class="fa fa-fw fa-caret-down"></i></a>
           <ul id="demo_2" class="collapse">
               <li>
                   <a href="/main"> sublevel1</a>
               </li>
               <li>
                   <a href="/main"> sublevel2</a>
               </li>
           </ul>
        </li>
     </ul>
</li>

</ul>

示例中的颜色显示您使用了一些/一些额外的css文件。