Bootstrap 折叠（Collapse）插件

折叠（Collapse）插件可以很容易地让页面区域折叠起来。无论您用它来创建折叠导航还是内容面板，它都允许很多内容选项。

如果您想要单独引用该插件的功能，那么您需要引用
collapse.js。同时，也需要在您的 Bootstrap 版本中引用
Transition（过渡）插件。或者，正如
Bootstrap 插件概览 一章中所提到，您可以引用
bootstrap.js 或压缩版的
bootstrap.min.js。

您可以使用折叠（Collapse）插件：

• 创建可折叠的分组或折叠面板（accordion），如下所示：
  

  实例

  < div class = “ panel-group “ id = “ accordion “ > < div class = “ panel panel-default “ > < div class = “ panel-heading “ > < h4 class = “ panel-title “ > < a data-toggle = “ collapse “ data-parent = “ #accordion “ href = “ #collapseOne “ > 点击我进行展开，再次点击我进行折叠。第 1 部分 </ a > </ h4 > </ div > < div id = “ collapseOne “ class = “ panel-collapse collapse in “ > < div class = “ panel-body “ > Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. </ div > </ div > </ div > < div class = “ panel panel-default “ > < div class = “ panel-heading “ > < h4 class = “ panel-title “ > < a data-toggle = “ collapse “ data-parent = “ #accordion “ href = “ #collapseTwo “ > 点击我进行展开，再次点击我进行折叠。第 2 部分 </ a > </ h4 > </ div > < div id = “ collapseTwo “ class = “ panel-collapse collapse “ > < div class = “ panel-body “ > Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. </ div > </ div > </ div > < div class = “ panel panel-default “ > < div class = “ panel-heading “ > < h4 class = “ panel-title “ > < a data-toggle = “ collapse “ data-parent = “ #accordion “ href = “ #collapseThree “ > 点击我进行展开，再次点击我进行折叠。第 3 部分 </ a > </ h4 > </ div > < div id = “ collapseThree “ class = “ panel-collapse collapse “ > < div class = “ panel-body “ > Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. </ div > </ div > </ div > </ div >
  尝试一下 »

  结果如下所示：

  

  1. data-toggle=”collapse” 添加到您想要展开或折叠的组件的链接上。
  2. href 或 data-target 属性添加到父组件，它的值是子组件的 id。
  3. data-parent 属性把折叠面板（accordion）的 id 添加到要展开或折叠的组件的链接上。
• 创建不带 accordion 标记的简单的可折叠组件（collapsible），如下所示：
  

  实例

  < button type = “ button “ class = “ btn btn-primary “ data-toggle = “ collapse “ data-target = “ #demo “ > 简单的可折叠组件 </ button > < div id = “ demo “ class = “ collapse in “ > Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. </ div >
  尝试一下 »

  结果如下所示：

  

  正如您在实例中看到的，我们创建了一个可折叠的组件，与折叠面板（accordion）不同，我们没有添加属性 data-parent。

用法

下表列出了折叠（Collapse）插件用于处理繁重的伸缩的 class：

您可以通过以下两种方式使用折叠（Collapse）插件：

• 通过 data 属性：向元素添加 data-toggle=”collapse” 和 data-target，自动分配可折叠元素的控制。data-target 属性接受一个 CSS 选择器，并会对其应用折叠效果。请确保向可折叠元素添加 class .collapse。如果您希望它默认情况下是打开的，请添加额外的 class .in。

  为了向可折叠控件添加类似折叠面板的分组管理，请添加 data 属性 data-parent=”#selector”。

• 通过 JavaScript：可通过 JavaScript 激活 collapse 方法，如下所示：

  $('.collapse').collapse()
  

选项

有一些选项是通过 data 属性或 JavaScript 来传递的。下表列出了这些选项：

方法

下面是一些折叠（Collapse）插件中有用的方法：

$('#identifier').collapse({
    toggle: false
})

$('#identifier').collapse('toggle')

$('#identifier').collapse('show')

$('#identifier').collapse('hide')

实例

下面的实例演示了方法的用法：

实例

<
div

class
=
“
panel-group
“

id
=
“
accordion
“
>

<
div

class
=
“
panel panel-default
“
>

<
div

class
=
“
panel-heading
“
>

<
h4

class
=
“
panel-title
“
>

<
a

data-toggle
=
“
collapse
“

data-parent
=
“
#accordion
“

href
=
“
#collapseOne
“
>
点击我进行展开，再次点击我进行折叠。第 1 部分–hide 方法
</
a
>

</
h4
>

</
div
>

<
div

id
=
“
collapseOne
“

class
=
“
panel-collapse collapse in
“
>

<
div

class
=
“
panel-body
“
>
Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo.
</
div
>

</
div
>

</
div
>

<
div

class
=
“
panel panel-success
“
>

<
div

class
=
“
panel-heading
“
>

<
h4

class
=
“
panel-title
“
>

<
a

data-toggle
=
“
collapse
“

data-parent
=
“
#accordion
“

href
=
“
#collapseTwo
“
>
点击我进行展开，再次点击我进行折叠。第 2 部分–show 方法
</
a
>

</
h4
>

</
div
>

<
div

id
=
“
collapseTwo
“

class
=
“
panel-collapse collapse
“
>

<
div

class
=
“
panel-body
“
>
Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo.
</
div
>

</
div
>

</
div
>

<
div

class
=
“
panel panel-info
“
>

<
div

class
=
“
panel-heading
“
>

<
h4

class
=
“
panel-title
“
>

<
a

data-toggle
=
“
collapse
“

data-parent
=
“
#accordion
“

href
=
“
#collapseThree
“
>
点击我进行展开，再次点击我进行折叠。第 3 部分–toggle 方法
</
a
>

</
h4
>

</
div
>

<
div

id
=
“
collapseThree
“

class
=
“
panel-collapse collapse
“
>

<
div

class
=
“
panel-body
“
>
Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo.
</
div
>

</
div
>

</
div
>

<
div

class
=
“
panel panel-warning
“
>

<
div

class
=
“
panel-heading
“
>

<
h4

class
=
“
panel-title
“
>

<
a

data-toggle
=
“
collapse
“

data-parent
=
“
#accordion
“

href
=
“
#collapseFour
“
>
点击我进行展开，再次点击我进行折叠。第 4 部分–options 方法
</
a
>

</
h4
>

</
div
>

<
div

id
=
“
collapseFour
“

class
=
“
panel-collapse collapse
“
>

<
div

class
=
“
panel-body
“
>
Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo.
</
div
>

</
div
>

</
div
>

</
div
>

<
script
>
$
(
function

(
)

{
$
(
‘
#collapseFour
‘
)
.
collapse
(
{

toggle
:
false

}
)
}
)
; $
(
function

(
)

{
$
(
‘
#collapseTwo
‘
)
.
collapse
(
‘
show
‘
)
}
)
; $
(
function

(
)

{
$
(
‘
#collapseThree
‘
)
.
collapse
(
‘
toggle
‘
)
}
)
; $
(
function

(
)

{
$
(
‘
#collapseOne
‘
)
.
collapse
(
‘
hide
‘
)
}
)
;
</
script
>


尝试一下 »

结果如下所示：

事件

下表列出了折叠（Collapse）插件中要用到的事件。这些事件可在函数中当钩子使用。

$('#identifier').on('show.bs.collapse', function () {
    // 执行一些动作...
})

$('#identifier').on('shown.bs.collapse', function () {
    // 执行一些动作...
})

$('#identifier').on('hide.bs.collapse', function () {
    // 执行一些动作...
})

$('#identifier').on('hidden.bs.collapse', function () {
    // 执行一些动作...
})

实例

下面的实例演示了事件的用法：

实例

<
div

class
=
“
panel-group
“

id
=
“
accordion
“
>

<
div

class
=
“
panel panel-info
“
>

<
div

class
=
“
panel-heading
“
>

<
h4

class
=
“
panel-title
“
>

<
a

data-toggle
=
“
collapse
“

data-parent
=
“
#accordion
“

href
=
“
#collapseexample
“
>
点击我进行展开，再次点击我进行折叠。–shown 事件
</
a
>

</
h4
>

</
div
>

<
div

id
=
“
collapseexample
“

class
=
“
panel-collapse collapse
“
>

<
div

class
=
“
panel-body
“
>
Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo.
</
div
>

</
div
>

</
div
>

</
div
>

<
script
>
$
(
function

(
)

{
$
(
‘
#collapseexample
‘
)
.
on
(
‘
show.bs.collapse
‘
,
function

(
)

{

alert
(
‘
嘿，当您展开时会提示本警告
‘
)
;
}
)

}
)
;
</
script
>


尝试一下 »

结果如下所示：