An element that can be turned on and off. Radio buttons are almost always grouped together in groups. Only one radio button within the same radiogroup may be selected at a time. The user can switch which radio button is turned on by selecting it with the mouse or keyboard. Other radio buttons in the same group are turned off. A label, specified with the label attribute may be added beside the radio button.

More information is available in the XUL tutorial.

accesskey, command, crop, disabled, focused, group, image, label, selected, tabindex, value
accessKey, accessibleType, control, crop, disabled, image, label, radioGroup, selected, tabIndex, value


  <radio id="orange" label="Red" accesskey="R"/>
  <radio id="violet" label="Green"  accesskey="G" selected="true"/>
  <radio id="yellow" label="Blue"  accesskey="B" disabled="true"/>


Type: character
This should be set to a letter that is used as a shortcut key. This letter should be one of the characters that appears in the label text for the element.


  <label value="Enter Name" accesskey="e" control="myName"/>
  <textbox id="myName"/>
  <button label="Cancel" accesskey="n"/>
  <button label="Ok" accesskey="O"/>

See also

label attribute, acceltext attribute

Type: element id
Set to the id of a command element that is being observed by the element.
Type: one of the values below
If the label of the element is too big to fit in its given space, the text will be cropped on the side specified by the crop attribute. An ellipsis will be used in place of the cropped text. If the box direction is reversed, the cropping is reversed.
  • start: The text will be cropped on its left side.
  • end: The text will be cropped on its right side.
  • left: The text will be cropped on its left side.
  • right: The text will be cropped on its right side.
  • center: The text will be cropped in the middle, showing both the start and end of the text normally.
  • none: The text will be not be cropped using an ellipsis. However, the text will simply be cut off if it is too large. The side depends on the CSS text alignment.
Type: boolean
Indicates whether the element is disabled or not. If this element is set to true the element is disabled. Disabled elements are usually drawn with grayed-out text. If the element is disabled, it does not respond to user actions, it cannot be focused, and the command event will not fire.

<!-- Checkbox enables/disables the button -->
<checkbox label="Enable button" 
    onclick="document.getElementById('buttRemove').disabled = this.checked"/>
<button id="buttRemove" label="Remove All" disabled="true"/>
Type: boolean
This attribute is true if the element is focused.
Type: string group name
Buttons with type="radio" and the same value for their group attribute are put into the same group. Only one button from each group can be checked at a time. If the user selects one the buttons, the others in the group are unchecked.
Type: image URL
The URL of the image to appear on the element. If this attribute is empty or left out, no image appears. The position of the image is determined by the dir and orient attributes.
Type: string
The label that will appear on the element. If this is left out, no text appears.
label 在元素上显示。如果左侧出界,则不显示任何文字。

Type: boolean
Indicates whether the element is selected or not. This value is read-only. To change the selection, set either the selectedIndex or selectedItem property of the containing element.
Type: integer
The tab order of the element. The tab order is the order in which the focus is moved when the user presses the "<kbd>tab</kbd>" key. Elements with a higher tabindex are later in the tab sequence.
Type: string
The string attribute allows you to associate a data value with an element. It is not used for any specific purpose, but you can access it with a script for your own use.


Type: character
Gets and sets the value of the accesskey attribute.

Type: integer
A value indicating the type of accessibility object for the element.
Type: radiogroup element
Returns the enclosing radiogroup that the radio element is contained within, which may or may not be its direct parent.
Type: string
Gets and sets the value of the crop attribute.

Type: boolean
Gets and sets the value of the disabled attribute.

Type: image URL
Gets and sets the value of the image attribute.

Type: string
Gets and sets the value of the label attribute.

Type: radiogroup element
Equivalent to the control property.
{{ languages( { "fr": "fr/XUL/Propri\u00e9t\u00e9s/selected", "ja": "ja/XUL/Property/selected" } ) }}
{{ XULProp("selected") }} {{ mediawiki['#switch']('<magic name="\"PAGENAME\"/">', XUL:menuitem, XUL:menuseparator = .. '<template><name>' .. Fx_minversion_inline .. '</name><arg>' .. 3 .. '</arg></template>') }}</magic>
Type: boolean
This property's value is true if this element is selected, or false if it is not. This property is read only.
Type: integer
Gets and sets the value of the tabindex attribute.

Type: string
Gets and sets the value of the value attribute.


Inherited from XUL element
blur, click, doCommand, focus, getElementsByAttribute

Inherited from DOM element
addEventListener(), appendChild(), dispatchEvent(), getAttribute(), getAttributeNode(), getAttributeNodeNS(), getAttributeNS(), getElementsByTagName(), getElementsByTagNameNS(), hasAttribute(), hasAttributeNS(), hasAttributes(), hasChildNodes(), insertBefore(), isSupported(), normalize(), removeAttribute(), removeAttributeNode(), removeAttributeNS(), removeChild(), removeEventListener(), replaceChild(), setAttribute(), setAttributeNode(), setAttributeNodeNS(), setAttributeNS()

radiogroup, checkbox
nsIAccessibleProvider, nsIDOMXULSelectControlItemElement, nsIDOMXULLabeledControlElement


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