From http://www.w3schools.com (Copyright Refsnes Data)
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).
| 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 |
| 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 |
| 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 |
From http://www.w3schools.com (Copyright Refsnes Data)