KeyboardEvent Object

• 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