Bootstrap 4 按钮组
按钮组
Bootstrap 4 中允许我们将按钮放在同一行上:
可以在 <div> 元素上添加 .btn-group 类来创建按钮组:
实例
<div class="btn-group">
<button type="button" class="btn btn-primary">Apple</button>
<button type="button" class="btn btn-primary">Samsung</button>
<button type="button" class="btn btn-primary">Sony</button>
</div>
亲自试一试 »
提示: 我们可以使用 .btn-group-lg 设置大型按钮组，使用 .btn-group-sm 设置小型按钮组:
大型按钮:
默认按钮:
小型按钮:
实例
<div class="btn-group btn-group-lg">
<button type="button" class="btn btn-primary">Apple</button>
<button type="button" class="btn btn-primary">Samsung</button>
<button type="button" class="btn btn-primary">Sony</button>
</div>
亲自试一试 »
垂直按钮组
Bootstrap 4 还支持垂直按钮组:
使用 .btn-group-vertical 类来创建垂直的按钮组:
实例
<div class="btn-group-vertical">
<button type="button" class="btn btn-primary">Apple</button>
<button type="button" class="btn btn-primary">Samsung</button>
<button type="button" class="btn btn-primary">Sony</button>
</div>
亲自试一试 »
嵌套按钮组和下拉菜单
我们可以在按钮组内设置下拉菜单（您将在后面的章节中了解有关下拉菜单的更多信息）:
实例
<div class="btn-group">
<button type="button" class="btn btn-primary">Apple</button>
<button type="button" class="btn btn-primary">Samsung</button>
<div class="btn-group">
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">
Sony
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Tablet</a>
<a class="dropdown-item" href="#">Smartphone</a>
</div>
</div>
</div>
亲自试一试 »
拆分按钮下拉菜单
实例
<div class="btn-group">
<button type="button" class="btn btn-primary">Sony</button>
<button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown">
<span class="caret"></span>
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Tablet</a>
<a class="dropdown-item" href="#">Smartphone</a>
</div>
</div>
亲自试一试 »
垂直按钮组及下拉菜单
实例
<div class="btn-group-vertical">
<button type="button" class="btn btn-primary">Apple</button>
<button type="button" class="btn btn-primary">Samsung</button>
<div class="btn-group">
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown">
Sony
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Tablet</a>
<a class="dropdown-item" href="#">Smartphone</a>
</div>
</div>
</div>
亲自试一试 »
按钮组并排排列
默认情况下，按钮组是"内联"的，当您有多个组时，它们会并排出现:
实例
<div class="btn-group">
<button type="button" class="btn btn-primary">Apple</button>
<button type="button" class="btn btn-primary">Samsung</button>
<button type="button" class="btn btn-primary">Sony</button>
</div>
<div class="btn-group">
<button type="button" class="btn btn-primary">BMW</button>
<button type="button" class="btn btn-primary">Mercedes</button>
<button type="button" class="btn btn-primary">Volvo</button>
</div>
亲自试一试 »
