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- What is it?
- RADIO is a TYPE attribute value to the INPUT tag for FORMs. A radio
field represents a boolean choice. A set of radio fields with the same name
represents a one-of-many choice. At any time only one button of a Radio
button group will be ON.
- Attributes
- CHECKED
- 2
| 3 | 3.2
| IE1 | M2A1
| N1
- Required? No
- Description:
This is an optional standalone attribute which indicates the initial
value for the Radio button is ON if
present. If this is omitted, the Radio button is
OFF.
- Values: NA
- Name
- 2
| 3 | 3.2
| IE1 | M2A1
| N1
- Required? No
- Description:
This is a required attribute that associates a symbolic name to the
field for submittal to the form processing script. A Radio button
that represents a portion of a Radio GROUP will have the same
NAME as the other Radio buttons in the group.
- Values: Alphanumeric characters.
- Type
- 2
| 3 | 3.2
| IE1 | M2A1
| N1
- Required? Yes*
- Description:
* This is the required TYPE attribute for
this INPUT mechanism. From the strict view, the TYPE attribute
is not required.
- Values: RADIO
- Value
- 2
| 3 | 3.2
| IE1 | M2A1
| N1
- Required? No
- Description:
This is a required attribute representing the symbolic result of the
radio button field when activated that is passed to the form processing
script.
- Values: Alphanumeric characters.
Event Handler Attributes
- [For more information on Event Handlers, please see the
SCRIPT page.]
- onClick
- 2
| 3 | 3.2
| IE3B1 | M
| N2B3
- Required? No
- Description:
A click Event Handler executes Script code when an object on a form
is clicked.
- Values:
Script statements or an external function call.
Style Sheet Attributes
[More on Cascading Style Sheets]
- Class
- 2 | 3
| 3.2 | IE3B1
| M | N4B2
- Required? No
- Description:
This represents an assigned semantic classification grouping(s) for the
current tag.
- Values:
Given as a comma separated list of alphanumeric characters. Class names
may contain spaces (multiple consecutive spaces treated as a single
space.)
- ID
- 2 | 3
| 3.2 | IE3B1
| M | N4B2
- Required? No
- Description:
This assigns an alpha-numeric identifier that is unique
to this tag instance. Style sheets may use this attribute to reference
the current instance of this tag. Hyperlinks may also use this identifier
to serve as a destination.
- Values:
An alphanumeric string - initial character must be a letter followed
by alphabetic characters, digits, "-" or "."
characters. The allowable set of alpha-characters is restricted to the
A-Z and a-z set.
- Style
- 2 | 3
| 3.2 | IE3B1
| M | N4B3
- Required? No
- Description:
This attribute is a text string that provides rendering style
information for the current tag.
- Values:
Please see the description of
inline styles for more
information on how to use this attribute and its
possible values.
- Example
- <form>
<input
TYPE="radio"
VALUE="Jazz"
NAME="Radio1">
Jazz<br>
<input
TYPE="radio"
VALUE="New Age"
NAME="Radio1">
New Age<br>
<input
TYPE="radio"
VALUE="Rock"
NAME="Radio1"
CHECKED>
Rock!<br>
</form>
- Parent Model
- <form>
- Content Model
- This tag accepts no content.
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