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按钮组

将一系列按钮组合在一行上或将它们堆叠在垂直列中。

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基本示例

在.btn-group中用.btn包装一系列按钮。

html 
<div class="btn-group" role="group" aria-label="Basic example">
  <button type="button" class="btn btn-primary">Left</button>
  <button type="button" class="btn btn-primary">Middle</button>
  <button type="button" class="btn btn-primary">Right</button>
</div>
按钮组需要适当的role属性和显式标签，以确保屏幕阅读器等辅助技术将按钮识别为已分组并播报。对按钮组使用 role="group"，对按钮工具栏使用 role="toolbar"。然后使用aria-label或aria-labelledby 来标记它们。

这些类也可以添加到链接组中，作为 .nav 导航组件 的替代方案。

Active link Link Link
html 
<div class="btn-group">
  <a href="#" class="btn btn-primary active" aria-current="page">Active link</a>
  <a href="#" class="btn btn-primary">Link</a>
  <a href="#" class="btn btn-primary">Link</a>
</div>

混合样式

html 
<div class="btn-group" role="group" aria-label="Basic mixed styles example">
  <button type="button" class="btn btn-danger">Left</button>
  <button type="button" class="btn btn-warning">Middle</button>
  <button type="button" class="btn btn-success">Right</button>
</div>

分级显示样式

html 
<div class="btn-group" role="group" aria-label="Basic outlined example">
  <button type="button" class="btn btn-outline-primary">Left</button>
  <button type="button" class="btn btn-outline-primary">Middle</button>
  <button type="button" class="btn btn-outline-primary">Right</button>
</div>

复选框和单选按钮组

将类似按钮的复选框和单选按钮切换按钮 组合成一个无缝外观的按钮组。

html 
<div class="btn-group" role="group" aria-label="Basic checkbox toggle button group">
  <input type="checkbox" class="btn-check" id="btncheck1" autocomplete="off">
  <label class="btn btn-outline-primary" for="btncheck1">Checkbox 1</label>

  <input type="checkbox" class="btn-check" id="btncheck2" autocomplete="off">
  <label class="btn btn-outline-primary" for="btncheck2">Checkbox 2</label>

  <input type="checkbox" class="btn-check" id="btncheck3" autocomplete="off">
  <label class="btn btn-outline-primary" for="btncheck3">Checkbox 3</label>
</div>
html 
<div class="btn-group" role="group" aria-label="Basic radio toggle button group">
  <input type="radio" class="btn-check" name="btnradio" id="btnradio1" autocomplete="off" checked>
  <label class="btn btn-outline-primary" for="btnradio1">Radio 1</label>

  <input type="radio" class="btn-check" name="btnradio" id="btnradio2" autocomplete="off">
  <label class="btn btn-outline-primary" for="btnradio2">Radio 2</label>

  <input type="radio" class="btn-check" name="btnradio" id="btnradio3" autocomplete="off">
  <label class="btn btn-outline-primary" for="btnradio3">Radio 3</label>
</div>

按钮工具栏

将按钮组集合并到按钮工具栏中，用于更复杂的组件。根据需要使用实用程序类来间隔组、按钮等。

html 
<div class="btn-toolbar" role="toolbar" aria-label="Toolbar with button groups">
  <div class="btn-group me-2" role="group" aria-label="First group">
    <button type="button" class="btn btn-primary">1</button>
    <button type="button" class="btn btn-primary">2</button>
    <button type="button" class="btn btn-primary">3</button>
    <button type="button" class="btn btn-primary">4</button>
  </div>
  <div class="btn-group me-2" role="group" aria-label="Second group">
    <button type="button" class="btn btn-secondary">5</button>
    <button type="button" class="btn btn-secondary">6</button>
    <button type="button" class="btn btn-secondary">7</button>
  </div>
  <div class="btn-group" role="group" aria-label="Third group">
    <button type="button" class="btn btn-info">8</button>
  </div>
</div>

随意将输入组与工具栏中的按钮组混合使用。与上面的示例类似，您可能需要一些实用程序来正确间隔。

html 
<div class="btn-toolbar mb-3" role="toolbar" aria-label="Toolbar with button groups">
  <div class="btn-group me-2" role="group" aria-label="First group">
    <button type="button" class="btn btn-outline-secondary">1</button>
    <button type="button" class="btn btn-outline-secondary">2</button>
    <button type="button" class="btn btn-outline-secondary">3</button>
    <button type="button" class="btn btn-outline-secondary">4</button>
  </div>
  <div class="input-group">
    <div class="input-group-text" id="btnGroupAddon">@</div>
    <input type="text" class="form-control" placeholder="Input group example" aria-label="Input group example" aria-describedby="btnGroupAddon">
  </div>
</div>

<div class="btn-toolbar justify-content-between" role="toolbar" aria-label="Toolbar with button groups">
  <div class="btn-group" role="group" aria-label="First group">
    <button type="button" class="btn btn-outline-secondary">1</button>
    <button type="button" class="btn btn-outline-secondary">2</button>
    <button type="button" class="btn btn-outline-secondary">3</button>
    <button type="button" class="btn btn-outline-secondary">4</button>
  </div>
  <div class="input-group">
    <div class="input-group-text" id="btnGroupAddon2">@</div>
    <input type="text" class="form-control" placeholder="Input group example" aria-label="Input group example" aria-describedby="btnGroupAddon2">
  </div>
</div>

调整尺寸大小

无需将按钮大小调整类应用于组中的每个按钮，只需将.btn-group-*添加到每个.btn-group，包括嵌套多个组时的每个按钮。



html 
<div class="btn-group btn-group-lg" role="group" aria-label="Large button group">
  <button type="button" class="btn btn-outline-primary">Left</button>
  <button type="button" class="btn btn-outline-primary">Middle</button>
  <button type="button" class="btn btn-outline-primary">Right</button>
</div>
<br>
<div class="btn-group" role="group" aria-label="Default button group">
  <button type="button" class="btn btn-outline-primary">Left</button>
  <button type="button" class="btn btn-outline-primary">Middle</button>
  <button type="button" class="btn btn-outline-primary">Right</button>
</div>
<br>
<div class="btn-group btn-group-sm" role="group" aria-label="Small button group">
  <button type="button" class="btn btn-outline-primary">Left</button>
  <button type="button" class="btn btn-outline-primary">Middle</button>
  <button type="button" class="btn btn-outline-primary">Right</button>
</div>

嵌套

当您希望下拉菜单与一系列按钮混合时，将.btn-group放在另一个.btn-group中。

html 
<div class="btn-group" role="group" aria-label="Button group with nested dropdown">
  <button type="button" class="btn btn-primary">1</button>
  <button type="button" class="btn btn-primary">2</button>

  <div class="btn-group" role="group">
    <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
      Dropdown
    </button>
    <ul class="dropdown-menu">
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
    </ul>
  </div>
</div>

垂直变化

使一组按钮垂直堆叠而不是水平堆叠显示。此处不支持拆分按钮下拉列表。

html 
<div class="btn-group-vertical" role="group" aria-label="Vertical button group">
  <button type="button" class="btn btn-primary">Button</button>
  <button type="button" class="btn btn-primary">Button</button>
  <button type="button" class="btn btn-primary">Button</button>
  <button type="button" class="btn btn-primary">Button</button>
  <button type="button" class="btn btn-primary">Button</button>
  <button type="button" class="btn btn-primary">Button</button>
</div>
html 
<div class="btn-group-vertical" role="group" aria-label="Vertical button group">
  <button type="button" class="btn btn-primary">Button</button>
  <button type="button" class="btn btn-primary">Button</button>
  <div class="btn-group" role="group">
    <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
      Dropdown
    </button>
    <ul class="dropdown-menu">
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
    </ul>
  </div>
  <button type="button" class="btn btn-primary">Button</button>
  <button type="button" class="btn btn-primary">Button</button>
  <div class="btn-group" role="group">
    <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
      Dropdown
    </button>
    <ul class="dropdown-menu">
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
    </ul>
  </div>
  <div class="btn-group" role="group">
    <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
      Dropdown
    </button>
    <ul class="dropdown-menu">
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
    </ul>
  </div>
  <div class="btn-group" role="group">
    <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
      Dropdown
    </button>
    <ul class="dropdown-menu">
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
      <li><a class="dropdown-item" href="#">Dropdown link</a></li>
    </ul>
  </div>
</div>
html 
<div class="btn-group-vertical" role="group" aria-label="Vertical radio toggle button group">
  <input type="radio" class="btn-check" name="vbtn-radio" id="vbtn-radio1" autocomplete="off" checked>
  <label class="btn btn-outline-danger" for="vbtn-radio1">Radio 1</label>
  <input type="radio" class="btn-check" name="vbtn-radio" id="vbtn-radio2" autocomplete="off">
  <label class="btn btn-outline-danger" for="vbtn-radio2">Radio 2</label>
  <input type="radio" class="btn-check" name="vbtn-radio" id="vbtn-radio3" autocomplete="off">
  <label class="btn btn-outline-danger" for="vbtn-radio3">Radio 3</label>
</div>