command

The command event is executed when an element is activated.

How it is activated varies for each element and in many cases, there are several ways to activate an element. For example, a button can be activated by clicking on it with the mouse or by pressing SPACE while it has the focus. Menus can be activated by selecting them with the mouse or by pressing a shortcut key. Command elements can be activated by any of their observing elements being activated. The command event should always be used instead of the click event because it will be called in all of the needed cases.

General info

Specification: XUL
Interface: XULCommandEvent
Bubbles: Yes
Cancelable: Yes
Target: element
Default Action: None

Properties

Property	Type	Description
`target` Read only	`EventTarget`	The event target (the topmost target in the DOM tree).
`type` Read only	`DOMString`	The type of event.
`bubbles` Read only	`Boolean`	Whether the event normally bubbles or not
`cancelable` Read only	`Boolean`	Whether the event is cancellable or not?
`view` Read only	`WindowProxy`	`document.defaultView` (`window` of the document)
`detail` Read only	`long` (`float`)	Unused; always zero.
`sourceEvent` Read only	Event	The activation event that caused this command event to be generated. Currently only set when a command event is redirected though use of the command attribute.
`ctrlKey` Read only	boolean	`true` if the control key was down when the event was fired. `false` otherwise.
`shiftKey` Read only	boolean	`true` if the shift key was down when the event was fired. `false` otherwise.
`altKey` Read only	boolean	`true` if the alt key was down when the event was fired. `false` otherwise.
`metaKey` Read only	boolean	`true` if the meta key was down when the event was fired. `false` otherwise.

Example

menuitem.oncommand = function() {
  console.log("the menu item has been activated");
};