Radio Object
For each instance of an HTML <input type="radio"> tag on a form, a Radio object is created.
All Radio objects are stored in the elements array of the corresponding
form. You can access a Radio object by indexing this array - either by number
(0 represents the first element in a form) or by using the value of the name
attribute.
The Radio object's properties, methods, and events are described below:
N: Netscape (including Mozilla when N6 or higher), IE: Internet Explorer, W3C: World Wide Web Consortium (Internet Standard)
Properties
Syntax: object.property_name
| Property |
Description |
N |
IE |
W3C |
| accept |
Sets or returns a list of content types that the server
that processes this form will handle correct |
|
- |
Yes |
| accesskey |
Sets or returns the keyboard key to access the radio button |
|
4 |
Yes |
| align |
Sets or returns the alignment of the radio button according
to the surrounding text |
|
- |
Yes |
| alt |
Sets or returns an alternate text to display if the browser
does not support radio buttons |
|
- |
Yes |
| checked |
Sets or returns the current state of the radio button (true if
selected and false if not selected) |
2 |
3.02 |
Yes |
| defaultChecked |
Sets or returns the default value of the checked attribute
(true if checked by default and false if not) |
2 |
3.02 |
Yes |
| disabled |
Sets or returns whether or not the radio button should be
disabled |
|
5.5 |
Yes |
| form |
Returns a reference to the radio button's parent form |
2 |
3.02 |
Yes |
| id |
Sets or returns the id of the radio button (In IE 4 this
property is read-only) |
|
4 |
No |
| name |
Sets or returns the name of the radio button |
2 |
3.02 |
Yes |
| size |
Sets or returns the size of the radio button |
|
3.02 |
Yes |
| tabIndex |
Sets or returns the tab order for the radio button |
|
4 |
Yes |
| type |
The type of the form element. For a radio object it will
always be "radio" |
3 |
3.02 |
Yes |
| value |
Sets or returns the value of the value attribute of the
radio button |
2 |
3.02 |
Yes |
Methods
Syntax: object.method_name()
| Method |
Description |
N |
IE |
W3C |
| blur() |
Removes focus from the radio button |
2 |
4 |
Yes |
| click() |
Simulates a mouse-click on the radio button |
|
4 |
Yes |
| focus() |
Sets focus on the radio button |
2 |
3.02 |
Yes |
| select() |
Selects the radio
button |
2 |
4 |
No |
Events
Syntax: object.event_name="someJavaScriptCode"
| Event |
Description |
N |
IE |
W3C |
| onBlur |
Executes some code when the radio button loses focus |
2 |
4 |
|
| onClick |
Executes some code when the user clicks on the radio button |
|
4 |
|
| onFocus |
Executes some code when the radio button gets focus |
2 |
3.02 |
|
| onSelectStart |
Executes some code when the radio button is
selected |
|
4 |
|
|