KeyboardEvent Object extends Event

• ctrlKey Boolean (optional) - whether the Control key was used in an accelerator to trigger the Event
• metaKey Boolean (optional) - whether a meta key was used in an accelerator to trigger the Event
• shiftKey Boolean (optional) - whether a Shift key was used in an accelerator to trigger the Event
• altKey Boolean (optional) - whether an Alt key was used in an accelerator to trigger the Event
• triggeredByAccelerator Boolean (optional) - whether an accelerator was used to trigger the event as opposed to another user gesture like mouse click