3.3 Bootstrap 按钮组

html<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

html<!-- 水平按钮组 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 垂直按钮组 -->
<div class="btn-group-vertical">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 内联按钮组 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

html<!-- 小型按钮组 -->
<div class="btn-group btn-sm">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 中型按钮组 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 大型按钮组 -->
<div class="btn-group btn-lg">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

html<!-- 主要颜色 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 次要颜色 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 成功颜色 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

html<!-- 禁用单个按钮 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary disabled">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 禁用所有按钮 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary disabled">Button1</button>
 <button type="button" class="btn btn-secondary disabled">Button2</button>
 <button type="button" class="btn btn-success disabled">Button3</button>
</div>

html<!-- 单击事件 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary" onclick="alert('Button1 clicked')">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 双击事件 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary" ondblclick="alert('Button1 double clicked')">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 鼠标悬停事件 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary" onmouseover="alert('Button1 hovered')">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 键盘事件 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary" onkeydown="alert('Button1 key down')">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

html<!-- 主题色 -->
<div class="btn-group">
 <button type="button" class="btn btn-primary">Button1</button>
 <button type="button" class="btn btn-secondary">Button2</button>
 <button type="button" class="btn btn-success">Button3</button>
</div>

<!-- 主题色（深色） -->
<div class="btn-group">
 <button type="button" class="btn btn-primary-dark">Button1</button>
 <button type="button" class="btn btn-secondary-dark">Button2</button>
 <button type="button" class="btn btn-success-dark">Button3</button>
</div>

<!-- 主题色（浅色） -->
<div class="btn-group">
 <button type="button" class="btn btn-primary-light">Button1</button>
 <button type="button" class="btn btn-secondary-light">Button2</button>
 <button type="button" class="btn btn-success-light">Button3</button>
</div>

<!-- 主题色（自