Bootstrap 嵌套列表的一致样式

Question

有没有办法让 twitter bootstrap 中的嵌套列表看起来像一个普通列表，嵌套项目只是缩进（并让它适用于任意深度的嵌套）？默认情况下，嵌套列表如下 所示：

 <ul class="list-group">
    <li class="list-group-item">One</li>
    <li class="list-group-item">Two
        <ul class="list-group">
            <li class="list-group-item">Item 2a</li>
            <li class="list-group-item">Item 2b</li>
        </ul>
    </li>
    <li class="list-group-item">Three
        <ul class="list-group">
            <li class="list-group-item">Item 3a</li>
            <li class="list-group-item">Item 3b</li>
        </ul>
    </li>
</ul>

我怎样才能使这些嵌套列表看起来像这样（或以某种类似的方式）：

如果您错过了上面的链接，这里是 JSFiddle： https ://jsfiddle.net/7o8rp0kv/1/

原文由 user3594595 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

嵌套组列表

 .just-padding {
  padding: 15px;
}

.list-group.list-group-root {
  padding: 0;
  overflow: hidden;
}

.list-group.list-group-root .list-group {
  margin-bottom: 0;
}

.list-group.list-group-root .list-group-item {
  border-radius: 0;
  border-width: 1px 0 0 0;
}

.list-group.list-group-root > .list-group-item:first-child {
  border-top-width: 0;
}

.list-group.list-group-root > .list-group > .list-group-item {
  padding-left: 30px;
}

.list-group.list-group-root > .list-group > .list-group > .list-group-item {
  padding-left: 45px;
}

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

<div class="just-padding">

<div class="list-group list-group-root well">

  <a href="#" class="list-group-item">Item 1</a>
  <div class="list-group">

    <a href="#" class="list-group-item">Item 1.1</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 1.1.1</a>
      <a href="#" class="list-group-item">Item 1.1.2</a>
      <a href="#" class="list-group-item">Item 1.1.3</a>
    </div>

    <a href="#" class="list-group-item">Item 1.2</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 1.2.1</a>
      <a href="#" class="list-group-item">Item 1.2.2</a>
      <a href="#" class="list-group-item">Item 1.2.3</a>
    </div>

    <a href="#" class="list-group-item">Item 1.3</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 1.3.1</a>
      <a href="#" class="list-group-item">Item 1.3.2</a>
      <a href="#" class="list-group-item">Item 1.3.3</a>
    </div>

  </div>

  <a href="#" class="list-group-item">Item 2</a>
  <div class="list-group">

    <a href="#" class="list-group-item">Item 2.1</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 2.1.1</a>
      <a href="#" class="list-group-item">Item 2.1.2</a>
      <a href="#" class="list-group-item">Item 2.1.3</a>
    </div>

    <a href="#" class="list-group-item">Item 2.2</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 2.2.1</a>
      <a href="#" class="list-group-item">Item 2.2.2</a>
      <a href="#" class="list-group-item">Item 2.2.3</a>
    </div>

    <a href="#" class="list-group-item">Item 2.3</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 2.3.1</a>
      <a href="#" class="list-group-item">Item 2.3.2</a>
      <a href="#" class="list-group-item">Item 2.3.3</a>
    </div>

  </div>


  <a href="#" class="list-group-item">Item 3</a>
  <div class="list-group">

    <a href="#" class="list-group-item">Item 3.1</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 3.1.1</a>
      <a href="#" class="list-group-item">Item 3.1.2</a>
      <a href="#" class="list-group-item">Item 3.1.3</a>
    </div>

    <a href="#" class="list-group-item">Item 3.2</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 3.2.1</a>
      <a href="#" class="list-group-item">Item 3.2.2</a>
      <a href="#" class="list-group-item">Item 3.2.3</a>
    </div>

    <a href="#" class="list-group-item">Item 3.3</a>
    <div class="list-group">
      <a href="#" class="list-group-item">Item 3.3.1</a>
      <a href="#" class="list-group-item">Item 3.3.2</a>
      <a href="#" class="list-group-item">Item 3.3.3</a>
    </div>

  </div>

</div>

</div>

在提琴手上查看： https ://jsfiddle.net/u3gd85cj/

---

嵌套组列表（可折叠）

 $(function() {

  $('.list-group-item').on('click', function() {
    $('.glyphicon', this)
      .toggleClass('glyphicon-chevron-right')
      .toggleClass('glyphicon-chevron-down');
  });

});

 .just-padding {
  padding: 15px;
}

.list-group.list-group-root {
  padding: 0;
  overflow: hidden;
}

.list-group.list-group-root .list-group {
  margin-bottom: 0;
}

.list-group.list-group-root .list-group-item {
  border-radius: 0;
  border-width: 1px 0 0 0;
}

.list-group.list-group-root > .list-group-item:first-child {
  border-top-width: 0;
}

.list-group.list-group-root > .list-group > .list-group-item {
  padding-left: 30px;
}

.list-group.list-group-root > .list-group > .list-group > .list-group-item {
  padding-left: 45px;
}

.list-group-item .glyphicon {
  margin-right: 5px;
}

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">

<div class="just-padding">

<div class="list-group list-group-root well">

  <a href="#item-1" class="list-group-item" data-toggle="collapse">
    <i class="glyphicon glyphicon-chevron-right"></i>Item 1
  </a>
  <div class="list-group collapse" id="item-1">

    <a href="#item-1-1" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 1.1
    </a>
    <div class="list-group collapse" id="item-1-1">
      <a href="#" class="list-group-item">Item 1.1.1</a>
      <a href="#" class="list-group-item">Item 1.1.2</a>
      <a href="#" class="list-group-item">Item 1.1.3</a>
    </div>

    <a href="#item-1-2" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 1.2
    </a>
    <div class="list-group collapse" id="item-1-2">
      <a href="#" class="list-group-item">Item 1.2.1</a>
      <a href="#" class="list-group-item">Item 1.2.2</a>
      <a href="#" class="list-group-item">Item 1.2.3</a>
    </div>

    <a href="#item-1-3" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 1.3
    </a>
    <div class="list-group collapse" id="item-1-3">
      <a href="#" class="list-group-item">Item 1.3.1</a>
      <a href="#" class="list-group-item">Item 1.3.2</a>
      <a href="#" class="list-group-item">Item 1.3.3</a>
    </div>

  </div>

  <a href="#item-2" class="list-group-item" data-toggle="collapse">
    <i class="glyphicon glyphicon-chevron-right"></i>Item 2
  </a>
  <div class="list-group collapse" id="item-2">

    <a href="#item-2-1" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 2.1
    </a>
    <div class="list-group collapse" id="item-2-1">
      <a href="#" class="list-group-item">Item 2.1.1</a>
      <a href="#" class="list-group-item">Item 2.1.2</a>
      <a href="#" class="list-group-item">Item 2.1.3</a>
    </div>

    <a href="#item-2-2" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 2.2
    </a>
    <div class="list-group collapse" id="item-2-2">
      <a href="#" class="list-group-item">Item 2.2.1</a>
      <a href="#" class="list-group-item">Item 2.2.2</a>
      <a href="#" class="list-group-item">Item 2.2.3</a>
    </div>

    <a href="#item-2-3" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 2.3
    </a>
    <div class="list-group collapse" id="item-2-3">
      <a href="#" class="list-group-item">Item 2.3.1</a>
      <a href="#" class="list-group-item">Item 2.3.2</a>
      <a href="#" class="list-group-item">Item 2.3.3</a>
    </div>

  </div>


  <a href="#item-3" class="list-group-item" data-toggle="collapse">
    <i class="glyphicon glyphicon-chevron-right"></i>Item 3
  </a>
  <div class="list-group collapse" id="item-3">

    <a href="#item-3-1" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 3.1
    </a>
    <div class="list-group collapse" id="item-3-1">
      <a href="#" class="list-group-item">Item 3.1.1</a>
      <a href="#" class="list-group-item">Item 3.1.2</a>
      <a href="#" class="list-group-item">Item 3.1.3</a>
    </div>

    <a href="#item-3-2" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 3.2
    </a>
    <div class="list-group collapse" id="item-3-2">
      <a href="#" class="list-group-item">Item 3.2.1</a>
      <a href="#" class="list-group-item">Item 3.2.2</a>
      <a href="#" class="list-group-item">Item 3.2.3</a>
    </div>

    <a href="#item-3-3" class="list-group-item" data-toggle="collapse">
      <i class="glyphicon glyphicon-chevron-right"></i>Item 3.3
    </a>
    <div class="list-group collapse" id="item-3-3">
      <a href="#" class="list-group-item">Item 3.3.1</a>
      <a href="#" class="list-group-item">Item 3.3.2</a>
      <a href="#" class="list-group-item">Item 3.3.3</a>
    </div>

  </div>

</div>

</div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>

在提琴手上查看： https ://jsfiddle.net/ann7tctp/

原文由 Marcos 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

我修改了 Marcos 答案以与 Bootstrap 4（和堡垒图标）一起使用，因为 glyphicons 不再是 Bootstrap 的一部分。主要变化是：

• 用堡垒图标替换字形图标
• 将类 list-group-item-action 添加到 list-group-item
• 在 css 中重新定义 .collapse （也许有更好的方法）

 .collapse {
    display: none;
    &.show {
        display: block;
    }
}

JSFiddle

原文由 Apollo3zehn 发布，翻译遵循 CC BY-SA 3.0 许可协议