隐藏在面板后面的下拉菜单答案

【问题标题】：drop-down menu hiding behind the panel隐藏在面板后面的下拉菜单
【发布时间】：2018-01-04 08:16:14
【问题描述】：

引导菜单隐藏在面板后面，对 z-index 无效：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>

<div class="panel panel-default">
  <div class="panel-heading">
    <i class="fa fa-calendar fa-fw"></i> System Years
    <div class="pull-right">
      <button type="button" class="btn btn-info btn-xs btn-add-year " data-toggle="tooltip" title="Add year"><i class="fa fa-plus"></i></button>
    </div>
  </div>
  <!-- /.panel-heading -->
  <div class="panel-body">
    <div class="table-responsive">
      <table class="table table-bordered table-hover table-striped">
        <tbody>
          <tr>
            <td>
              <strong>2014</strong>

              <div class="btn-group">
                <button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                                Menu 1 <span class="caret"></span>
                                            </button>
                <ul class="dropdown-menu">
                  <li><a href="javascript:;">All</a></li>
                  <li><a href="javascript:;">Other</a></li>
                </ul>
              </div>

            </td>

          </tr>
          <tr>
            <td>
              <strong>2015</strong>

              <div class="btn-group">
                <button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                                Menu 2 <span class="caret"></span>
                                            </button>
                <ul class="dropdown-menu">
                  <li><a href="javascript:;">All</a></li>
                  <li><a href="javascript:;">Other</a></li>
                </ul>
              </div>

            </td>

          </tr>

        </tbody>
      </table>
    </div>
    <!-- /.table-responsive -->
  </div>
  <!-- /.panel-body -->
</div>

【问题讨论】：

我找到了关于这个的解决方案[查看解决方案][1] 我希望这个对你有帮助...谢谢[1]：stackoverflow.com/a/65614338/14344959

标签： javascript html css twitter-bootstrap

【解决方案1】：

问题与父 div 溢出有关。请参阅该 div 的以下代码并查看图片以供参考：

@media screen and (max-width: 767px)
tables.less:180
.table-responsive {
    width: 100%;
    margin-bottom: 15px;
    overflow-y: visible;
    -ms-overflow-style: -ms-autohiding-scrollbar;
    border: 1px solid #ddd;
    height: 120px;
}

【讨论】：

【解决方案2】：

您可以在 .table-responsive div 中使用overflow: inherit !important;

.table-responsive{overflow: inherit !important;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>


<div class="panel panel-default">
  <div class="panel-heading">
    <i class="fa fa-calendar fa-fw"></i> System Years
    <div class="pull-right">
      <button type="button" class="btn btn-info btn-xs btn-add-year " data-toggle="tooltip" title="Add year"><i class="fa fa-plus"></i></button>
    </div>
  </div>
  <!-- /.panel-heading -->
  <div class="panel-body">
    <div class="table-responsive">
      <table class="table table-bordered table-hover table-striped">
        <tbody>
          <tr>
            <td>
              <strong>2014</strong>

              <div class="btn-group">
                <button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                                Menu 1 <span class="caret"></span>
                                            </button>
                <ul class="dropdown-menu">
                  <li><a href="javascript:;">All</a></li>
                  <li><a href="javascript:;">Other</a></li>
                </ul>
              </div>

            </td>

          </tr>
          <tr>
            <td>
              <strong>2015</strong>

              <div class="btn-group">
                <button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                                Menu 2 <span class="caret"></span>
                                            </button>
                <ul class="dropdown-menu">
                  <li><a href="javascript:;">All</a></li>
                  <li><a href="javascript:;">Other</a></li>
                </ul>
              </div>

            </td>

          </tr>

        </tbody>
      </table>
    </div>
    <!-- /.table-responsive -->
  </div>
  <!-- /.panel-body -->
</div>

【讨论】：

【解决方案3】：

请使用类表而不是表响应。表响应类有一个属性溢出：隐藏。

  <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<div class="panel panel-default">
  <div class="panel-heading">
    <i class="fa fa-calendar fa-fw"></i> System Years
    <div class="pull-right">
      <button type="button" class="btn btn-info btn-xs btn-add-year " data-toggle="tooltip" title="Add year"><i class="fa fa-plus"></i></button>
    </div>
  </div>
  <!-- /.panel-heading -->
  <div class="panel-body">
    <div class="table">
      <table class="table table-bordered table-hover table-striped">
        <tbody>
          <tr>
            <td>
              <strong>2014</strong>

              <div class="btn-group">
                <button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                                Menu 1 <span class="caret"></span>
                                            </button>
                <ul class="dropdown-menu">
                  <li><a href="javascript:;">All</a></li>
                  <li><a href="javascript:;">Other</a></li>
                </ul>
              </div>

            </td>

          </tr>
          <tr>
            <td>
              <strong>2015</strong>

              <div class="btn-group">
                <button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                                                Menu 2 <span class="caret"></span>
                                            </button>
                <ul class="dropdown-menu">
                  <li><a href="javascript:;">All</a></li>
                  <li><a href="javascript:;">Other</a></li>
                </ul>
              </div>

            </td>

          </tr>

        </tbody>
      </table>
    </div>
    <!-- /.table-responsive -->
  </div>
  <!-- /.panel-body -->
</div>

【讨论】：

对不起，不能这样做，我们需要表格响应
好的，在 .table-responsive { overflow-y: visible;}中添加这个