JS & DOM Reference

Overview

JavaScript Objects

JS Array
JS Boolean
JS Date
JS Math
JS Number
JS String
JS RegExp
JS Global

Browser Objects

Window
Navigator
Screen
History
Location

Core DOM Objects

DOM Node
DOM NodeList
DOM NamedNodeMap
DOM Document
DOM Element
DOM Attr

HTML DOM Objects

DOM Document
DOM Events
DOM Elements

DOM Anchor
DOM Area
DOM Base
DOM Body
DOM Button
DOM Form
DOM Frame/IFrame
DOM Frameset
DOM Image
DOM Input Button
DOM Input Checkbox
DOM Input File
DOM Input Hidden
DOM Input Password
DOM Input Radio
DOM Input Reset
DOM Input Submit
DOM Input Text
DOM Link
DOM Meta
DOM Object
DOM Option
DOM Select
DOM Style
DOM Table
DOM td / th
DOM tr
DOM Textarea

HTML DOM Radio Object

« Previous

Next Reference »

Radio Object

The Radio object represents a radio button in an HTML form.

Radio buttons allow the user to select only ONE of a predefined set of options. You define groups with the name property (radio buttons with the same name belong to the same group).

For each <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().

Note: The Radio object can also use the properties/methods of:

Radio Object Properties

W3C: W3C Standard.

Property	Description	W3C
checked	Sets or returns the checked state of a radio button	Yes
defaultChecked	Returns the default value of the checked attribute	Yes
disabled	Sets or returns whether the radio button is disabled, or not	Yes
form	Returns a reference to the form that contains the radio button	Yes
name	Sets or returns the value of the name attribute of a radio button	Yes
type	Returns which type of form element the radio button is	Yes
value	Sets or returns the value of the value attribute of the radio button	Yes

Standard Properties and Events

The Radio object also supports the standard properties and events.