使用 bootstrap4 的可滚动表体

Question

使用 Bootstrap-4我无法为带有固定标题的表格主体应用滚动。我正在使用 min-height 以及溢出来将滚动应用于表格主体。bootstrap4 不支持在表体上滚动吗？下面的片段更清楚地解释了这个问题。

我是不是哪里出错了？

.tbody {
  min-height:10px;
  overflow-y:scroll;
}

 <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
  
  
  <div class="container">
          
  <table class="table table-bordered">
    <thead>
      <tr>
        <th>Firstname</th>
        <th>Lastname</th>
        <th>Email</th>
      </tr>
    </thead>
    <tbody class="tbody">
      <tr>
        <td>John</td>
        <td>Doe</td>
        <td>john@example.com</td>
      </tr>
      <tr>
        <td>Mary</td>
        <td>Moe</td>
        <td>mary@example.com</td>
      </tr>
      <tr>
        <td>July</td>
        <td>Dooley</td>
        <td>july@example.com</td>
      </tr>
    </tbody>
  </table>
</div>

Answer 1

将display:block属性设置为表格后，您可以设置高度和宽度。

尝试这个：

table {
  display:block;
  height : <set your desired height>;
  overflow-y : scroll;
}

Answer 2

我希望这就是您正在寻找的

.tbody {
  height: 50px !important;
  overflow-y: scroll;	
}
   
.my-tbody {
  height:30px;
  display:block;
  overflow-y:scroll;
  width:100%;
}

tbody {
  width: 100%;
}

tr {
  width: 100%;
}

td {
  width: 33.33%;

<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.0/js/bootstrap.min.js"></script>
  
  
  <div class="container">
          
  <table class="table table-bordered">
    <thead>
      <tr>
        <th>Firstname</th>
        <th>Lastname</th>
        <th>Email</th>
      </tr>
    </thead>
    <table class="my-tbody">
      <tr>
        <td>John</td>
        <td>Doe</td>
        <td>john@example.com</td>
      </tr>
      <tr>
        <td>Mary</td>
        <td>Moe</td>
        <td>mary@example.com</td>
      </tr>
      <tr>
        <td>July</td>
        <td>Dooley</td>
        <td>july@example.com</td>
      </tr>
      <div class="cl"></div>
    </table>
  
  </table>
</div>