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 value attribute may be added beside the check box to indicate to the user as to its function.

Example:

    <checkbox value="Enable JavaScript" checked="false"/>

Attributes inherited from XUL Element

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 checkbox. This letter will typically be drawn underlined, although this behavior will be platform and skin specific. When the user presses ALT (or a similar key that varies on each platform) and the access key, the checkbox will be activated from anywhere in the window.

Indicates whether the checkbox is checked or not.

If the label of the checkbox is too small to fit in its given space, the text will be cropped on the side specified by the crop attribute. An ellipsis will be placed in place of the cropped text.

• 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 on both sides.
• none: The text will be not be cropped using an ellipsis. However, the text will simply be cut off if it too large. The side depends on the CSS text alignment.

If this attribute is set to true, the checkbox is disabled. This is usually drawn with the text in grey. If the checkbox is disabled, the function of the button cannot be performed. The value may also be set to false for a regular active button. If this attribute is left out entirely, the button is enabled.

Indicates the flexibility of the checkbox. Flexible elements grow and shrink to fit their given space. The actual value is not relevant unless there are other flexible elements with-in the same container. Elements with larger flex values will grow more than elements with lower flex values, at the ratio determined by the two elements.

The height of the checkbox in pixels. It is recommended to use the CSS height property instead.

For elements placed within a bulletinboard, specifies the position of the left edge of the checkbox.

Used to specify whether the children of the checkbox element are oriented horizontally or vertically.

• horizontal: Child elements of the checkbox are placed next to each other in a row in the order that they appear in the XUL source.
• vertical: Child elements of the checkbox are placed under to each other in a column in the order that they appear in the XUL source.

The URL of the image to appear on the checkbox. If this is attribute is left out, no image appears.

For elements placed within a bulletinboard, specifies the position of the top edge of the checkbox.

The label that will appear on the checkbox. If this is left out, no text appears.

The width of the checkbox in pixels. It is recommended to use the CSS width property instead.

Properties and Methods inherited from XUL Element

Returns true if the checkbox is checked and false if the checkbox is unchecked.

Gets and sets the value of the accesskey attribute.

Gets and sets the value of the crop attribute.

Gets and sets the value of the disabled attribute.

Gets and sets the value of the imgalign attribute.

Gets and sets the value of the src attribute.

Gets and sets the value of the value attribute.