HTML DOM Radio Object
Radio Object
The Radio object represents a radio button in an HTML form.
For each instance of an <input type="radio"> tag
in an HTML form, a Radio object is created.
You can access a radio object by searching through the elements[] array
of the form, or by using document.getElementById().
IE: Internet Explorer, F: Firefox, O: Opera, W3C:
World Wide Web Consortium (Internet Standard).
Radio Object Properties
| Property |
Description |
IE |
F |
O |
W3C |
| accessKey |
Sets or returns the keyboard key to access a radio button |
4 |
1 |
9 |
Yes |
| alt |
Sets or returns an alternate text to display if a browser
does not support radio buttons |
5 |
1 |
9 |
Yes |
| checked |
Sets or returns the state of a radio button |
4 |
1 |
9 |
Yes |
| defaultChecked |
Returns the default state of a radio button |
4 |
1 |
9 |
Yes |
| disabled |
Sets or returns whether or not a radio button should be
disabled |
5 |
1 |
9 |
Yes |
| form |
Returns a reference to the form that contains the radio
button |
4 |
1 |
9 |
Yes |
| id |
Sets or returns the id of a radio button |
4 |
1 |
9 |
Yes |
| name |
Sets or returns the name of a radio button |
4 |
1 |
9 |
Yes |
| tabIndex |
Sets or returns the tab order for a radio button |
4 |
1 |
9 |
Yes |
| type |
Returns the type of form element a radio button is |
4 |
1 |
9 |
Yes |
| value |
Sets or returns the value of the value attribute of the
radio button |
4 |
1 |
9 |
Yes |
Standard Properties
| Property |
Description |
IE |
F |
O |
W3C |
| className |
Sets or returns the class attribute of an element |
5 |
1 |
9 |
Yes |
| dir |
Sets or returns the direction of text |
5 |
1 |
9 |
Yes |
| lang |
Sets or returns the language code for an element |
5 |
1 |
9 |
Yes |
| title |
Sets or returns an element's advisory title |
5 |
1 |
9 |
Yes |
Radio Object Methods
| Method |
Description |
IE |
F |
O |
W3C |
| blur() |
Removes focus from a radio button |
No |
1 |
9 |
Yes |
| click() |
Simulates a mouse-click on a radio button |
No |
2 |
9 |
Yes |
| focus() |
Sets focus on a radio button |
No |
1 |
9 |
Yes |
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