Bootstrap 按鈕下拉菜單

本章將講解如何使用 Bootstrap class 向按鈕添加下拉菜單。如需向按鈕添加下拉菜單，只需要簡(jiǎn)單地在一個(gè) .btn-group 容器中放置按鈕和下拉菜單即可。您也可以使用 來(lái)指示按鈕作為下拉菜單。

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下面的實(shí)例演示了一個(gè)基本的簡(jiǎn)單的按鈕下拉菜單：

實(shí)例

<
div

class
=
"
btn-group
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-default dropdown-toggle
"

data-toggle
=
"
dropdown
"
>
默認(rèn)
<
span

class
=
"
caret
"
>
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>

<
a

href
=
"
#
"
>
功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
另一個(gè)功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
其他
a
>

li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>

<
a

href
=
"
#
"
>
分離的鏈接
a
>

li
>

ul
>

div
>

<
div

class
=
"
btn-group
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-primary dropdown-toggle
"

data-toggle
=
"
dropdown
"
>
原始
<
span

class
=
"
caret
"
>
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>

<
a

href
=
"
#
"
>
功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
另一個(gè)功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
其他
a
>

li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>

<
a

href
=
"
#
"
>
分離的鏈接
a
>

li
>

ul
>

div
>

嘗試一下 ?

結(jié)果如下所示：

分割的按鈕下拉菜單

分割的按鈕下拉菜單使用與下拉菜單按鈕大致相同的樣式，但是對(duì)下拉菜單添加了原始的功能。分割按鈕的左邊是原始的功能，右邊是顯示下拉菜單的切換。

實(shí)例

<
div

class
=
"
btn-group
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-default
"
>
默認(rèn)
button
>

<
button

type
=
"
button
"

class
=
"
btn btn-default dropdown-toggle
"

data-toggle
=
"
dropdown
"
>

<
span

class
=
"
caret
"
>
span
>

<
span

class
=
"
sr-only
"
>
切換下拉菜單
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>
<
a

href
=
"
#
"
>
功能
a
>
li
>

<
li
>
<
a

href
=
"
#
"
>
另一個(gè)功能
a
>
li
>

<
li
>
<
a

href
=
"
#
"
>
其他
a
>
li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>
<
a

href
=
"
#
"
>
分離的鏈接
a
>
li
>

ul
>

div
>

<
div

class
=
"
btn-group
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-primary
"
>
原始
button
>

<
button

type
=
"
button
"

class
=
"
btn btn-primary dropdown-toggle
"

data-toggle
=
"
dropdown
"
>

<
span

class
=
"
caret
"
>
span
>

<
span

class
=
"
sr-only
"
>
切換下拉菜單
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>
<
a

href
=
"
#
"
>
功能
a
>
li
>

<
li
>
<
a

href
=
"
#
"
>
另一個(gè)功能
a
>
li
>

<
li
>
<
a

href
=
"
#
"
>
其他
a
>
li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>
<
a

href
=
"
#
"
>
分離的鏈接
a
>
li
>

ul
>

div
>

嘗試一下 ?

結(jié)果如下所示：

按鈕下拉菜單的大小

您可以使用帶有各種大小按鈕的下拉菜單：.btn-lg、.btn-sm 或 .btn-xs。

實(shí)例

<
div

class
=
"
btn-group
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-default dropdown-toggle btn-lg
"

data-toggle
=
"
dropdown
"
>
默認(rèn)
<
span

class
=
"
caret
"
>
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>

<
a

href
=
"
#
"
>
功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
另一個(gè)功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
其他
a
>

li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>

<
a

href
=
"
#
"
>
分離的鏈接
a
>

li
>

ul
>

div
>

<
div

class
=
"
btn-group
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-primary dropdown-toggle btn-sm
"

data-toggle
=
"
dropdown
"
>
原始
<
span

class
=
"
caret
"
>
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>

<
a

href
=
"
#
"
>
功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
另一個(gè)功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
其他
a
>

li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>

<
a

href
=
"
#
"
>
分離的鏈接
a
>

li
>

ul
>

div
>

<
div

class
=
"
btn-group
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-success dropdown-toggle btn-xs
"

data-toggle
=
"
dropdown
"
>
成功
<
span

class
=
"
caret
"
>
span
>
button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>

<
a

href
=
"
#
"
>
功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
另一個(gè)功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
其他
a
>

li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>

<
a

href
=
"
#
"
>
分離的鏈接
a
>

li
>

ul
>

div
>

嘗試一下 ?

結(jié)果如下所示：

按鈕上拉菜單

菜單也可以往上拉伸的，只需要簡(jiǎn)單地向父 .btn-group 容器添加 .dropup 即可。

實(shí)例

<
div

class
=
"
row
"

style
=
"
margin-left:50px; margin-top:200px
"
>

<
div

class
=
"
btn-group dropup
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-default dropdown-toggle
"

data-toggle
=
"
dropdown
"
>
默認(rèn)
<
span

class
=
"
caret
"
>
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>

<
a

href
=
"
#
"
>
功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
另一個(gè)功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
其他
a
>

li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>

<
a

href
=
"
#
"
>
分離的鏈接
a
>

li
>

ul
>

div
>

<
div

class
=
"
btn-group dropup
"
>

<
button

type
=
"
button
"

class
=
"
btn btn-primary dropdown-toggle
"

data-toggle
=
"
dropdown
"
>
原始
<
span

class
=
"
caret
"
>
span
>

button
>

<
ul

class
=
"
dropdown-menu
"

role
=
"
menu
"
>

<
li
>

<
a

href
=
"
#
"
>
功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
另一個(gè)功能
a
>

li
>

<
li
>

<
a

href
=
"
#
"
>
其他
a
>

li
>

<
li

class
=
"
divider
"
>
li
>

<
li
>

<
a

href
=
"
#
"
>
分離的鏈接
a
>

li
>

ul
>

div
>

div
>

嘗試一下 ?

結(jié)果如下所示：

網(wǎng)站題目：創(chuàng)新互聯(lián)Bootstrap教程：Bootstrap按鈕下拉菜單
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