Input Type=Checkbox
 
Support Key: [2|3|3.2|4] [X1|X1.1] [IE1|M2A1|N1|O2.1]
What is it?
Attributes
Tag Example
Parent/Content Model
Tips & Tricks
Browser Peculiarities
= Index DOT Html by Brian Wilson =
Main Index | Element Tree | Element Index | HTML Support History



   Quick Statistics   
End Tag:
   Omitted
Standards Details:
In all HTML 4.x/XHTML DTDs
XHTML Modules:
Basic Forms, Forms
CSS 'display' Type:
"inline" (Replaced element)
CSS Mapping:
NA
Default Rendering:
A toggle-able widget indicating one of two states: on or off.
Official Docs:
HTML 4.x, XHTML 1.1

What is it?
CHECKBOX is a TYPE attribute value to the INPUT element for FORMs. It indicates a form field used for a boolean choice, or for attributes that can take multiple values at the same time. The default state for a checkbox is OFF. Only checkboxes that are in a checked state should be submitted to the form processing script.

Common Attributes
%Core%
[2|3|3.2|4] [X1|X1.1] [IE4B1|M|N6B1|O4]
%Accessibility%
[2|3|3.2|4] [X1|X1.1] [IE4B1|M|N6|O5]
%Events%
[2|3|3.2|4] [X1|X1.1] [IE3|M|N2|O3]
%Language%
[2|3|3.2|4] [X1|X1.1] [IE4|M|N|O]
%Data%
[2|3|3.2|4] [X1|X1.1] [IE4|M|N|O]
%Editing%
[2|3|3.2|4] [X1|X1.1] [IE5.5|M|N|O]

Specific Attributes
Accesskey
[2|3|3.2|4] [X1|X1.1] [IE4B1|M|N6B2|O7]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? No
Description:
This is a method of giving access/focus to an active HTML element using a keyboard character. This is a common GUI paradigm also known as a "keyboard shortcut" or "keyboard accelerator" A single character is used as the value of this attribute. In addition, a platform-dependent key is usually used in combination with the ACCESSKEY character to access the functionality of the active field.
Values: CDATA. [A single, case-insensitive character from a browser's character set.]
Align
[2|3|3.2|4] [X1|X1.1] [IE|M|N6B1|O]
Standards Details: Deprecated in HTML 4.x/XHTML 1.0. Dropped in XHTML 1.1 in favor of CSS.
Required? No
Description:
This attribute specifies the alignment of text following the INPUT reference relative to the field on screen. LEFT and RIGHT specify floating horizontal alignment of the form field in the browser window, and subsequent text will wrap around the form field. The other options specify vertical alignment of text relative to the form field on the same line.
Values: Left | Right | Top | Texttop | Middle | Absmiddle | Baseline | Bottom | Absbottom
Checked
[2|3|3.2|4] [X1|X1.1] [IE1|M2A1|N1|O2.1]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? No
Description:
This is an optional stand alone attribute which turns the checkbox on if present. If this attribute is omitted, the initial state is off.
Values: Stand-alone or ON | OFF [DEFAULT]
Disabled
[2|3|3.2|4] [X1|X1.1] [IE4B1|M|N6B1|O5]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? No
Description:
This is a stand-alone attribute which indicates the element is initially non-functional. Disabled form elements should not be submitted to the form processing script.
Values: NA (HTML); disabled (XHTML)
Name
[2|3|3.2|4] [X1|X1.1] [IE1|M2A1|N1|O2.1]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? Yes
Description:
This is a required attribute that associates a symbolic name to the field for submittal to the form processing script.
Values: CDATA
Readonly
[2|3|3.2|4] [X1|X1.1] [IE|M|N|O5-5.x]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? No
Description:
This is a stand-alone attribute which tells the browser that content in the field may not be modified by the reader.
Values: NA (HTML); readonly (XHTML)
SDAPref
[2|3|3.2|4] [X1|X1.1] [IE|M|N|O]
Standards Details: NA
Required? No
Description:
This is an SGML Document Access (SDA) attribute. SDA attributes are designed to transform HTML (and other SGML-based documents) to the ICADD DTD - which is used in creating accessible documents for users with visual disabilities (rendering in Braille, large print, speech synthesis, etc.) The attribute value specifies content to be added BEFORE the original element content (in this case the string "Input: ") when the SDA document is rendered.
Value: "Input: "
Tabindex
[2|3|3.2|4] [X1|X1.1] [IE4B1|M|N6B3|O7]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? No
Description:
"Tabbing" is a method of giving access/focus to an active HTML element using a standard keyboard sequence. All the active elements in a document can be cycled through using this sequence (ex: Windows TAB key.) The order of the active elements in this cycle is usually the order they occur in the document, but the TABINDEX attribute allows a different order to be established. The use of this attribute should create the following tabbing order cycle if the browser supports the attribute:
  1. Active elements using the TABINDEX attribute with positive integers are navigated first. Low values are navigated first.
  2. Active elements not specifying any TABINDEX attribute
Those elements carrying a DISABLED attribute or using negative TABINDEX values do not participate in the tabbing cycle.
Values: Positive or negative integers.
Type
[2|3|3.2|4] [X1|X1.1] [IE1|M2A1|N1|O2.1]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? Yes*
Description:
* This is the required TYPE attribute for this INPUT mechanism. From the strict view, the TYPE attribute is not required.
Values: CHECKBOX
Value
[2|3|3.2|4] [X1|X1.1] [IE1|M2A1|N1|O2.1]
Standards Details: In all HTML 4.x/XHTML DTDs
Required? Yes
Description:
This is a required attribute representing the symbolic result of the checkbox field when activated that is passed to the form processing script.
Values: CDATA
Example
<form>
   <input type="checkbox" value="3" name="foo" checked />
</form>
Parent Model
%In-line Parent% | %Block Parent%
Content Model
This element does not accept any content.
Tips & Tricks Browser Peculiarities
Boring Copyright Stuff...