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按钮组允许多个按钮被堆叠在同一行上。当你想要把按钮对齐在一起时，这就显得非常有用。您可以通过 Bootstrap 按钮（Button） 插件 添加可选的 JavaScript 单选框和复选框样式行为。
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下面的表格总结了 Bootstrap 提供的使用按钮组的一些重要的 class：
| Class | 描述 | 代码示例 |
|---|---|---|
| .btn-group | 该 class 用于形成基本的按钮组。在 .btn-group 中放置一系列带有 class .btn 的按钮。 | |
| .btn-toolbar | 该 class 有助于把几组 结合到一个 | |
| .btn-group-lg, .btn-group-sm, .btn-group-xs | 这些 class 可应用到整个按钮组的大小调整，而不需要对每个按钮进行大小调整。 |
|
| .btn-group-vertical | 该 class 让一组按钮垂直堆叠显示，而不是水平堆叠显示。 |
|
下面的实例演示了上面表格中讨论到的 class .btn-group 的使用：
<
div
class
=
"
btn-group
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 1
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 2
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 3
button
>
div
>
尝试一下 »
结果如下所示：
下面的实例演示了上面表格中讨论到的 class .btn-toolbar 的使用：
<
div
class
=
"
btn-toolbar
"
role
=
"
toolbar
"
>
<
div
class
=
"
btn-group
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 1
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 2
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 3
button
>
div
>
<
div
class
=
"
btn-group
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 4
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 5
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 6
button
>
div
>
<
div
class
=
"
btn-group
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 7
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 8
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 9
button
>
div
>
div
>
尝试一下 »
结果如下所示：
下面的实例演示了上面表格中讨论到的 class .btn-group-* 的使用：
<
div
class
=
"
btn-group btn-group-lg
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 1
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 2
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 3
button
>
div
>
<
div
class
=
"
btn-group btn-group-sm
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 4
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 5
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 6
button
>
div
>
<
div
class
=
"
btn-group btn-group-xs
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 7
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 8
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 9
button
>
div
>
尝试一下 »
结果如下所示：
您可以在一个按钮组内嵌套另一个按钮组，即，在一个 .btn-group 内嵌套另一个 .btn-group 。当您想让下拉菜单与一系列按钮组合使用时，就会用到这个。
<
div
class
=
"
btn-group
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 1
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 2
button
>
<
div
class
=
"
btn-group
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default dropdown-toggle
"
data-toggle
=
"
dropdown
"
>
下拉
<
span
class
=
"
caret
"
>
span
>
button
>
<
ul
class
=
"
dropdown-menu
"
>
<
li
>
<
a
href
=
"
#
"
>
下拉链接 1
a
>
li
>
<
li
>
<
a
href
=
"
#
"
>
下拉链接 2
a
>
li
>
ul
>
div
>
div
>
尝试一下 »
结果如下所示：
下面的实例演示了上面表格中讨论到的 class .btn-group-vertical 的使用：
<
div
class
=
"
btn-group-vertical
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 1
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-default
"
>
按钮 2
button
>
<
div
class
=
"
btn-group-vertical
"
>
<
button
type
=
"
button
"
class
=
"
btn btn-default dropdown-toggle
"
data-toggle
=
"
dropdown
"
>
下拉
<
span
class
=
"
caret
"
>
span
>
button
>
<
ul
class
=
"
dropdown-menu
"
>
<
li
>
<
a
href
=
"
#
"
>
下拉链接 1
a
>
li
>
<
li
>
<
a
href
=
"
#
"
>
下拉链接 2
a
>
li
>
ul
>
div
>
div
>
尝试一下 »
结果如下所示：