Bootstrap4 表單控件

Bootstrap4 支持以下表單控件：

• input
• textarea
• checkbox
• radio
• select

Bootstrap Input

Bootstrap 支持所有的 HTML5 輸入類型: text, password, datetime, datetime-local, date, month, time, week, number, email, url, search, tel, 以及 color。

注意：: 如果 input 的 type 屬性未正確聲明，輸入框的樣式將不會顯示。

以下實例使用兩個 input 元素，一個是 text，一個是 password ：

實例

<
div

class
=
"
form-group
"
>

<
label

for
=
"
usr
"
>
用戶名:
label
>

<
input

type
=
"
text
"

class
=
"
form-control
"

id
=
"
usr
"
>

div
>

<
div

class
=
"
form-group
"
>

<
label

for
=
"
pwd
"
>
密碼:
label
>

<
input

type
=
"
password
"

class
=
"
form-control
"

id
=
"
pwd
"
>

div
>

嘗試一下 ?

Bootstrap textarea

以下實例演示了 textarea 的樣式。

實例

<
div

class
=
"
form-group
"
>

<
label

for
=
"
comment
"
>
評論:
label
>

<
textarea

class
=
"
form-control
"

rows
=
"
5
"

id
=
"
comment
"
>
textarea
>

div
>

嘗試一下 ?

Bootstrap 復(fù)選框(checkbox)

復(fù)選框用于讓用戶從一系列預(yù)設(shè)置的選項中進(jìn)行選擇，可以選一個或多個。

以下實例包含了三個選項。最后一個是禁用的：

實例

<
div

class
=
"
form-check
"
>

<
label

class
=
"
form-check-label
"
>

<
input

type
=
"
checkbox
"

class
=
"
form-check-input
"

value
=
"
"
>
Option 1
label
>

div
>

<
div

class
=
"
form-check
"
>

<
label

class
=
"
form-check-label
"
>

<
input

type
=
"
checkbox
"

class
=
"
form-check-input
"

value
=
"
"
>
Option 2
label
>

div
>

<
div

class
=
"
form-check disabled
"
>

<
label

class
=
"
form-check-label
"
>

<
input

type
=
"
checkbox
"

class
=
"
form-check-input
"

value
=
"
"

disabled
>
Option 3
label
>

div
>

嘗試一下 ?

使用 .form-check-inline 類可以讓選項顯示在同一行上：

實例

<
div

class
=
"
form-check form-check-inline
"
>

<
label

class
=
"
form-check-label
"
>

<
input

type
=
"
checkbox
"

class
=
"
form-check-input
"

value
=
"
"
>
Option 1
label
>

div
>

<
div

class
=
"
form-check form-check-inline
"
>

<
label

class
=
"
form-check-label
"
>

<
input

type
=
"
checkbox
"

class
=
"
form-check-input
"

value
=
"
"
>
Option 2
label
>

div
>

<
div

class
=
"
form-check form-check-inline disabled
"
>

<
label

class
=
"
form-check-label
"
>

<
input

type
=
"
checkbox
"

class
=
"
form-check-input
"

value
=
"
"

disabled
>
Option 3
label
>

div
>

嘗試一下 ?

Bootstrap 單選框(Radio)

單選框用于讓用戶從一系列預(yù)設(shè)置的選項中進(jìn)行選擇，只能選一個。

以下實例包含了三個選項。最后一個是禁用的：

實例

<
div

class
=
"
radio
"
>

<
label
>
<
input

type
=
"
radio
"

name
=
"
optradio
"
>
Option 1
label
>

div
>

<
div

class
=
"
radio
"
>

<
label
>
<
input

type
=
"
radio
"

name
=
"
optradio
"
>
Option 2
label
>

div
>

<
div

class
=
"
radio disabled
"
>

<
label
>
<
input

type
=
"
radio
"

name
=
"
optradio
"

disabled
>
Option 3
label
>

div
>

嘗試一下 ?

使用 .radio-inline 類可以讓選項顯示在同一行上：

實例

<
label

class
=
"
radio-inline
"
>
<
input

type
=
"
radio
"

name
=
"
optradio
"
>
Option 1
label
>

<
label

class
=
"
radio-inline
"
>
<
input

type
=
"
radio
"

name
=
"
optradio
"
>
Option 2
label
>

<
label

class
=
"
radio-inline
"
>
<
input

type
=
"
radio
"

name
=
"
optradio
"

disabled
>
Option 3
label
>

嘗試一下 ?

Bootstrap select 下拉菜單

當(dāng)您想讓用戶從多個選項中進(jìn)行選擇，但是默認(rèn)情況下只能選擇一個選項時，則使用選擇框。

以下實例包含了兩個下拉菜單：

實例

<
div

class
=
"
form-group
"
>

<
label

for
=
"
sel1
"
>
下拉菜單:
label
>

<
select

class
=
"
form-control
"

id
=
"
sel1
"
>

<
option
>
1
option
>

<
option
>
2
option
>

<
option
>
3
option
>

<
option
>
4
option
>

select
>

div
>

嘗試一下 ?

新聞標(biāo)題：創(chuàng)新互聯(lián)Bootstrap4教程：Bootstrap4表單控件
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