Bootstrap4 提示框
提示框是一个小小的弹窗，在鼠标移动到元素上显示，鼠标移到元素外就消失。
如何创建提示框
通过向元素添加 data-toggle="tooltip" 来来创建提示框。
title 属性的内容为提示框显示的内容：
<
a
href
=
"
#
"
data-toggle
=
"
tooltip
"
title
=
"
我是提示内容!
"
>
鼠标移动到我这
</
a
>
注意: 提示框要写在 jQuery 的初始化代码里: 然后在指定的元素上调用 tooltip() 方法。
以下实例可以在文档的任何地方使用提示框：
实例
$
(
document
)
.
ready
(
function
(
)
{
$
(
'
[data-toggle="tooltip"]
'
)
.
tooltip
(
)
;
}
)
;
尝试一下 »
指定提示框的位置
默认情况下提示框显示在元素上方。
可以使用 data-placement 属性来设定提示框显示的方向: top, bottom, left 或 right:
实例
<
a
href
=
"
#
"
data-toggle
=
"
tooltip
"
data-placement
=
"
top
"
title
=
"
我是提示内容!
"
>
鼠标移动到我这
</
a
>
<
a
href
=
"
#
"
data-toggle
=
"
tooltip
"
data-placement
=
"
bottom
"
title
=
"
我是提示内容!
"
>
鼠标移动到我这
</
a
>
<
a
href
=
"
#
"
data-toggle
=
"
tooltip
"
data-placement
=
"
left
"
title
=
"
我是提示内容!
"
>
鼠标移动到我这
</
a
>
<
a
href
=
"
#
"
data-toggle
=
"
tooltip
"
data-placement
=
"
right
"
title
=
"
我是提示内容!
"
>
鼠标移动到我这
</
a
>
尝试一下 »
在按钮中使用:
实例
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-toggle
=
"
tooltip
"
data-placement
=
"
top
"
title
=
"
Tooltip on top
"
>
Tooltip on top
</
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-toggle
=
"
tooltip
"
data-placement
=
"
right
"
title
=
"
Tooltip on right
"
>
Tooltip on right
</
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-toggle
=
"
tooltip
"
data-placement
=
"
bottom
"
title
=
"
Tooltip on bottom
"
>
Tooltip on bottom
</
button
>
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-toggle
=
"
tooltip
"
data-placement
=
"
left
"
title
=
"
Tooltip on left
"
>
Tooltip on left
</
button
>
尝试一下 »
提示内容添加 HTML 标签，设置 data-html="true"，内容放在 title 标签里头:
实例
<
button
type
=
"
button
"
class
=
"
btn btn-secondary
"
data-toggle
=
"
tooltip
"
data-html
=
"
true
"
title
=
"
<em>Tooltip</em> <u>with</u> <b>HTML</b>
"
>
Tooltip with HTML
</
button
>
尝试一下 »
禁用按钮：
实例
<
span
class
=
"
d-inline-block
"
tabindex
=
"
"
data-toggle
=
"
tooltip
"
title
=
"
Disabled tooltip
"
>
<
button
class
=
"
btn btn-primary
"
style
=
"
pointer-events: none;
"
type
=
"
button
"
disabled
>
Disabled button
</
button
>
</
span
>
尝试一下 »
