checkbox

An element that can be turned on and off. This is most commonly rendered as a box when the element is off and a box with a check when the element is on. The user can switch the state of the check box by selecting it with the mouse. A label, specified with the label attribute, may be added beside the check box.

More information is available in the XUL tutorial.

Attributes
accesskey, checked, command, crop, disabled, src, label, preference, tabindex
Properties
accessKey, accessibleType, checked, command, crop, disabled, src, label, tabIndex

Examples

Image:XUL_ref_checkbox.png
<checkbox label="Enable JavaScript" checked="true"/>
<checkbox label="Enable Java" checked="false"/>

Attributes

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

 

checked
Type: boolean
Indicates whether the element is checked or not.
Use hasAttribute() to determine whether this attribute is set instead of getAttribute().
For buttons, the type attribute must be set to checkbox or radio for this attribute to have any effect.
command
Type: id
Set to the id of a command element that is being observed by the element.
crop
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 in left-to-right text locales, and the right side in right-to-left locales.
end
The text will be cropped on its right side in left-to-right text locales, and the right side in right-to-left locales.
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.
Depending on the platform and theme being used, some elements will have set a maximum width so they will always appear cropped. If you wish to use the value none and the displayed text is larger than this maximum width, you may be able to use the max-width CSS property (or the maxwidth attribute) to override this size. For example, for a menuitem in a menu you can add the following CSS rule when you want to use the value none:
menupopup > menuitem, menupopup > menu { max-width: none; }
disabled
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.
Visible controls have a disabled property which, except for menus and menuitems, is normally preferred to use of the attribute, as it may need to update additional state.
src
Type: URI
Set this to an URI pointing to an image to appear in the checkbox. If this attribute is left out, no image appears. You can have both an image and a label.
label
Type: string
The label that will appear on the element. If this is left out, no text appears. For an editable menuitem element the value of this attribute is copied to the menulist.value property upon user selection of the menuitem.

 

preference
Type: id
Connects the element to a corresponding preference. This attribute only has any effect when used inside a prefwindow. More information is available in the Preferences System article.
tabindex
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 "tab" key. Elements with a higher tabindex are later in the tab sequence.

Properties

accessKey
Type: character
Gets and sets the value of the accesskey attribute.
accessibleType
Type: integer
A value indicating the type of accessibility object for the element.
checked
Type: boolean
Gets and sets the value of the checked attribute.
command
Type: element id
Gets and sets the value of the command attribute.
crop
Type: string
Gets and sets the value of the crop attribute.
disabled
Type: boolean
Gets and sets the value of the disabled attribute.
src
Type: URL
Gets and sets the value of the src attribute.
label
Type: string
Gets and sets the value of the label attribute.
tabIndex
Type: integer
Gets and sets the value of the tabindex attribute.

Methods

Inherited Methods
addEventListener(), appendChild(), blur, click, cloneNode(), compareDocumentPosition, dispatchEvent(), doCommand, focus, getAttribute(), getAttributeNode(), getAttributeNodeNS(), getAttributeNS(), getBoundingClientRect(), getClientRects(), getElementsByAttribute, getElementsByAttributeNS, getElementsByClassName(), getElementsByTagName(), getElementsByTagNameNS(), getFeature, getUserData, hasAttribute(), hasAttributeNS(), hasAttributes(), hasChildNodes(), insertBefore(), isDefaultNamespace(), isEqualNode, isSameNode, isSupported(), lookupNamespaceURI, lookupPrefix, normalize(), querySelector(), querySelectorAll(), removeAttribute(), removeAttributeNode(), removeAttributeNS(), removeChild(), removeEventListener(), replaceChild(), setAttribute(), setAttributeNode(), setAttributeNodeNS(), setAttributeNS(), setUserData

Interfaces
nsIAccessibleProvider, nsIDOMXULCheckboxElement

 

Attachments

File Size Date Attached by
FxBeta-2.png
15087 bytes 2005-10-08 17:31:16 Mcaruso
XUL_ref_checkbox.png
1603 bytes 2006-06-14 21:43:51 Pmash

Document Tags and Contributors

Contributors to this page: Sheppy, Enn, Callek, trevorh, Ptak82, Mgjbot, Pmash, Taken, Dria
Last updated by: Sheppy,