Bootstrap4 弹出框
弹出框控件类似于提示框，它在鼠标点击到元素后显示，与提示框不同的是它可以显示更多的内容。
如何创建弹出框
通过向元素添加
data-toggle="popover"
来来创建弹出框。
title
属性的内容为弹出框的标题，
data-content
属性显示了弹出框的文本内容：
<
a
href
=
"
#
"
data-toggle
=
"
popover
"
title
=
"
弹出框标题
"
data-content
=
"
弹出框内容
"
>
多次点我
</
a
>
注意:
弹出框要写在 jQuery 的初始化代码里: 然后在指定的元素上调用
popover()
方法。
以下实例可以在文档的任何地方使用弹出框：
实例
$
(
document
)
.
ready
(
function
(
)
{
$
(
'
[data-toggle="popover"]
'
)
.
popover
(
)
;
}
)
;
尝试一下 »
指定弹出框的位置
默认情况下弹出框显示在元素右侧。
可以使用
data-placement
属性来设定弹出框显示的方向: top, bottom, left 或 right:
实例
<
a
href
=
"
#
"
title
=
"
Header
"
data-toggle
=
"
popover
"
data-placement
=
"
top
"
data-content
=
"
Content
"
>
点我
</
a
>
<
a
href
=
"
#
"
title
=
"
Header
"
data-toggle
=
"
popover
"
data-placement
=
"
bottom
"
data-content
=
"
Content
"
>
点我
</
a
>
<
a
href
=
"
#
"
title
=
"
Header
"
data-toggle
=
"
popover
"
data-placement
=
"
left
"
data-content
=
"
Content
"
>
点我
</
a
>
<
a
href
=
"
#
"
title
=
"
Header
"
data-toggle
=
"
popover
"
data-placement
=
"
right
"
data-content
=
"
Content
"
>
点我
</
a
>
尝试一下 »
按钮中使用:
实例
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-container
=
"
body
"
data-toggle
=
"
popover
"
data-placement
=
"
top
"
data-content
=
"
Vivamus sagittis lacus vel augue laoreet rutrum faucibus.
"
>
Popover on top
</
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-container
=
"
body
"
data-toggle
=
"
popover
"
data-placement
=
"
right
"
data-content
=
"
Vivamus sagittis lacus vel augue laoreet rutrum faucibus.
"
>
Popover on right
</
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-container
=
"
body
"
data-toggle
=
"
popover
"
data-placement
=
"
bottom
"
data-content
=
"
Vivamus
sagittis lacus vel augue laoreet rutrum faucibus.
"
>
Popover on bottom
</
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-container
=
"
body
"
data-toggle
=
"
popover
"
data-placement
=
"
left
"
data-content
=
"
Vivamus sagittis lacus vel augue laoreet rutrum faucibus.
"
>
Popover on left
</
button
>
尝试一下 »
关闭弹出框
默认情况下，弹出框在再次点击指定元素后就会关闭，你可以使用
data-trigger="focus"
属性来设置在鼠标点击元素外部区域来关闭弹出框：
实例
<
a
href
=
"
#
"
title
=
"
取消弹出框
"
data-toggle
=
"
popover
"
data-trigger
=
"
focus
"
data-content
=
"
点击文档的其他地方关闭我
"
>
点我
</
a
>
尝试一下 »
提示:
如果你想实现在鼠标移动到元素上显示，移除后消失的效果，可以使用
data-trigger
属性，并设置值为
"hover":
实例
<
a
href
=
"
#
"
title
=
"
Header
"
data-toggle
=
"
popover
"
data-trigger
=
"
hover
"
data-content
=
"
一些内容
"
>
鼠标移动到我这
</
a
>
尝试一下 »
