中。
向标签添加 class .control-label。实例
<
form
class
=
"
form-horizontal
"
role
=
"
form
"
>
<
div
class
=
"
form-group
"
>
<
label
for
=
"
firstname
"
class
=
"
col-sm-2 control-label
"
>
名字
label
>
<
div
class
=
"
col-sm-10
"
>
<
input
type
=
"
text
"
class
=
"
form-control
"
id
=
"
firstname
"
placeholder
=
"
请输入名字
"
>
div
>
div
>
<
div
class
=
"
form-group
"
>
<
label
for
=
"
lastname
"
class
=
"
col-sm-2 control-label
"
>
姓
label
>
<
div
class
=
"
col-sm-10
"
>
<
input
type
=
"
text
"
class
=
"
form-control
"
id
=
"
lastname
"
placeholder
=
"
请输入姓
"
>
div
>
div
>
<
div
class
=
"
form-group
"
>
<
div
class
=
"
col-sm-offset-2 col-sm-10
"
>
<
div
class
=
"
checkbox
"
>
<
label
>
<
input
type
=
"
checkbox
"
>
请记住我
label
>
div
>
div
>
div
>
<
div
class
=
"
form-group
"
>
<
div
class
=
"
col-sm-offset-2 col-sm-10
"
>
<
button
type
=
"
submit
"
class
=
"
btn btn-default
"
>
登录
button
>
div
>
div
>
form
>
尝试一下 »
结果如下所示:
支持的表单控件
Bootstrap 支持最常见的表单控件,主要是 input、textarea、checkbox、radio 和 select。
输入框(Input)
最常见的表单文本字段是输入框 input。用户可以在其中输入大多数必要的表单数据。Bootstrap 提供了对所有原生的 HTML5 的 input 类型的支持,包括:text、password、datetime、datetime-local、date、month、time、week、number、email、url、search、tel 和 color。适当的 type 声明是必需的,这样才能让 input 获得完整的样式。
实例
<
form
role
=
"
form
"
>
<
div
class
=
"
form-group
"
>
<
label
for
=
"
name
"
>
标签
label
>
<
input
type
=
"
text
"
class
=
"
form-control
"
placeholder
=
"
文本输入
"
>
div
>
form
>
尝试一下 »
结果如下所示:
文本框(Textarea)
当您需要进行多行输入的时,则可以使用文本框 textarea。必要时可以改变 rows 属性(较少的行 = 较小的盒子,较多的行 = 较大的盒子)。
实例
<
form
role
=
"
form
"
>
<
div
class
=
"
form-group
"
>
<
label
for
=
"
name
"
>
文本框
label
>
<
textarea
class
=
"
form-control
"
rows
=
"
3
"
>
textarea
>
div
>
form
>
尝试一下 »
结果如下所示:
复选框(Checkbox)和单选框(Radio)
复选框和单选按钮用于让用户从一系列预设置的选项中进行选择。
- 当创建表单时,如果您想让用户从列表中选择若干个选项时,请使用 checkbox。如果您限制用户只能选择一个选项,请使用 radio。
- 对一系列复选框和单选框使用 .checkbox-inline 或 .radio-inline class,控制它们显示在同一行上。
下面的实例演示了这两种类型(默认和内联):
实例
<
label
for
=
"
name
"
>
默认的复选框和单选按钮的实例
label
>
<
div
class
=
"
checkbox
"
>
<
label
>
<
input
type
=
"
checkbox
"
value
=
"
"
>
选项 1
label
>
div
>
<
div
class
=
"
checkbox
"
>
<
label
>
<
input
type
=
"
checkbox
"
value
=
"
"
>
选项 2
label
>
div
>
<
div
class
=
"
radio
"
>
<
label
>
<
input
type
=
"
radio
"
name
=
"
optionsRadios
"
id
=
"
optionsRadios1
"
value
=
"
option1
"
checked
>
选项 1
label
>
div
>
<
div
class
=
"
radio
"
>
<
label
>
<
input
type
=
"
radio
"
name
=
"
optionsRadios
"
id
=
"
optionsRadios2
"
value
=
"
option2
"
>
选项 2 - 选择它将会取消选择选项 1
label
>
div
>
<
label
for
=
"
name
"
>
内联的复选框和单选按钮的实例
label
>
<
div
>
<
label
class
=
"
checkbox-inline
"
>
<
input
type
=
"
checkbox
"
id
=
"
inlineCheckbox1
"
value
=
"
option1
"
>
选项 1
label
>
<
label
class
=
"
checkbox-inline
"
>
<
input
type
=
"
checkbox
"
id
=
"
inlineCheckbox2
"
value
=
"
option2
"
>
选项 2
label
>
<
label
class
=
"
checkbox-inline
"
>
<
input
type
=
"
checkbox
"
id
=
"
inlineCheckbox3
"
value
=
"
option3
"
>
选项 3
label
>
<
label
class
=
"
radio-inline
"
>
<
input
type
=
"
radio
"
name
=
"
optionsRadiosinline
"
id
=
"
optionsRadios3
"
value
=
"
option1
"
checked
>
选项 1
label
>
<
label
class
=
"
radio-inline
"
>
<
input
type
=
"
radio
"
name
=
"
optionsRadiosinline
"
id
=
"
optionsRadios4
"
value
=
"
option2
"
>
选项 2
label
>
div
>
尝试一下 »
结果如下所示:
选择框(Select)
当您想让用户从多个选项中进行选择,但是默认情况下只能选择一个选项时,则使用选择框。
- 使用
- 使用 multiple="multiple" 允许用户选择多个选项。
下面的实例演示了这两种类型(select 和 multiple):
实例
<
form
role
=
"
form
"
>
<
div
class
=
"
form-group
"
>
<
label
for
=
"
name
"
>
选择列表
label
>
<
select
class
=
"
form-control
"
>
<
option
>
1
option
>
<
option
>
2
option
>
<
option
>
3
option
>
<
option
>
4
option
>
<
option
>
5
option
>
select
>
<
label
for
=
"
name
"
>
可多选的选择列表
label
>
<
select
multiple
class
=
"
form-control
"
>
<
option
>
1
option
>
<
option
>
2
option
>
<
option
>
3
option
>
<
option
>
4
option
>
<
option
>
5
option
>
select
>
div
>
form
>
尝试一下 »
结果如下所示:
静态控件
当您需要在一个水平表单内的表单标签后放置纯文本时,请在
上使用 class .form-control-static。
实例
<
form
class
=
"
form-horizontal
"
role
=
"
form
"
>
<
div
class
=
"
form-group
"
>
<
label
class
=
"
col-sm-2 control-label
"
>
Email
label
>
<
div
class
=
"
col-sm-10
"
>
<
p
class
=
"
form-control-static
"
>
email@example.com
p
>
div
>
div
>
<
div
class
=
"
form-group
"
>
<
label
for
=
"
inputPassword
"
class
=
"
col-sm-2 control-label
"
>
密码
label
>
<
div
class
=
"
col-sm-10
"
>
<
input
type
=
"
password
"
class
=
"
form-control
"
id
=
"
inputPassword
"
placeholder
=
"
请输入密码
"
>
div
>
div
>
form
>
尝试一下 »
结果如下所示:
表单控件状态
除了 :focus 状态(即,用户点击 input 或使用 tab 键聚焦到 input 上),Bootstrap 还为禁用的输入框定义了样式,并提供了表单验证的 class。
输入框焦点
当输入框 input 接收到 :focus 时,输入框的轮廓会被移除,同时应用 box-shadow。
禁用的输入框 input
如果您想要禁用一个输入框 input,只需要简单地添加 disabled 属性,这不仅会禁用输入框,还会改变输入框的样式以及当鼠标的指针悬停在元素上时鼠标指针的样式。
禁用的字段集 fieldset
对