Keyboard Event Information Online

1. Keyboard locations
   The following constants identify which part of the keyboard the key event originates from. They are accessed as KeyboardEvent.DOM_KEY_LOCATION_STANDARD and so forth.

   Constant	Value	Description
   DOM_KEY_LOCATION_STANDARD	0x00	The key described by the event is not identified as being located in a particular area of the keyboard; it is not located on the numeric keypad (unless it's the NumLock key), and for keys that are duplicated on the left and right sides of the keyboard, the key is, for whatever reason, not to be associated with that location. Examples include alphanumeric keys on the standard PC 101 US keyboard, the NumLock key, and the space bar.
   DOM_KEY_LOCATION_LEFT	0x01	The key is one which may exist in multiple locations on the keyboard and, in this instance, is on the left side of the keyboard. Examples include the left Control key, the left Command key on a Macintosh keyboard, or the left Shift key.
   DOM_KEY_LOCATION_RIGHT	0x02	The key is one which may exist in multiple positions on the keyboard and, in this case, is located on the right side of the keyboard. Examples include the right Shift key and the right Alt key (Option on a Mac keyboard).
   DOM_KEY_LOCATION_NUMPAD	0x03	The key is located on the numeric keypad, or is a virtual key associated with the numeric keypad if there's more than one place the key could originate from. The NumLock key does not fall into this group and is always encoded with the location DOM_KEY_LOCATION_STANDARD. Examples include the digits on the numeric keypad, the keypad's Enter key, and the decimal point on the keypad.

2. Modifier Keys

   Key	Description
   Alt	Alt (Option or ⌥ on macOS)
   Ctrl	Ctrl Key
   Meta	the Meta key (on Mac keyboards, the ⌘ Command key; on Windows keyboards, the Windows key ⊞)
   Shift	Shift Key

3. KeyboardEvent MDN Reference
4. KeyboardEvent Reference Table

   category	key	code	keyCode	location
   Main Area	1	Digit1	49	0
   	2	Digit2	50	0
   	3	Digit3	51	0
   	4	Digit4	52	0
   	5	Digit5	53	0
   	6	Digit6	54	0
   	7	Digit7	55	0
   	8	Digit8	56	0
   	9	Digit9	57	0
   	0	Digit0	48	0
   	a	KeyA	65	0
   	b	KeyB	66	0
   	c	KeyC	67	0
   	d	KeyD	68	0
   	e	KeyE	69	0
   	f	KeyF	70	0
   	g	KeyG	71	0
   	h	KeyH	72	0
   	i	KeyI	73	0
   	j	KeyJ	74	0
   	k	KeyK	75	0
   	l	KeyL	76	0
   	m	KeyM	77	0
   	n	KeyN	78	0
   	o	KeyO	79	0
   	p	KeyP	80	0
   	q	KeyQ	81	0
   	r	KeyR	82	0
   	s	KeyS	83	0
   	t	KeyT	84	0
   	u	KeyU	85	0
   	v	KeyV	86	0
   	w	KeyW	87	0
   	x	KeyX	88	0
   	y	KeyY	89	0
   	z	KeyZ	90	0
   	A	KeyA	65	0
   	B	KeyB	66	0
   	C	KeyC	67	0
   	D	KeyD	68	0
   	E	KeyE	69	0
   	F	KeyF	70	0
   	G	KeyG	71	0
   	H	KeyH	72	0
   	I	KeyI	73	0
   	J	KeyJ	74	0
   	K	KeyK	75	0
   	L	KeyL	76	0
   	M	KeyM	77	0
   	N	KeyN	78	0
   	O	KeyO	79	0
   	P	KeyP	80	0
   	Q	KeyQ	81	0
   	R	KeyR	82	0
   	S	KeyS	83	0
   	T	KeyT	84	0
   	U	KeyU	85	0
   	V	KeyV	86	0
   	W	KeyW	87	0
   	X	KeyX	88	0
   	Y	KeyY	89	0
   	Z	KeyZ	90	0
   	`	Backquote	192	0
   	-	Minus	189	0
   =	Equal	187	0
   Backspace	Backspace	8	0
   Tab	Tab	9	0
   [	BracketLeft	219	0
   ]	BracketRight	221	0
   \	Backslash	220	0
   CapsLock	CapsLock	20	0
   ;	Semicolon	186	0
   '	Quote	222	0
   Enter	Enter	13	0
   Shift	ShiftLeft	16	1
   ,	Comma	188	0
   .	Period	190	0
   /	Slash	191	0
   Shift	ShiftRight	16	2
   Control	ControlLeft	17	1
   Meta	MetaLeft	91	1
   Alt	AltLeft	18	1
   	Space	32	0
   Alt	AltRight	18	2
   Meta	MetaRight	92	2
   ContextMenu	ContextMenu	93	0
   Control	ControlRight	17	2
   ~	Backquote	192	0
   !	Digit1	49	0
   @	Digit2	50	0
   #	Digit3	51	0
   $	Digit4	52	0
   %	Digit5	53	0
   ^	Digit6	54	0
   &	Digit7	55	0
   *	Digit8	56	0
   (	Digit9	57	0
   )	Digit0	48	0
   _	Minus	189	0
   +	Equal	187	0
   {	BracketLeft	219	0
   }	BracketRight	221	0
   |	Backslash	220	0
   :	Semicolon	186	0
   "	Quote	222	0
   <	Comma	188	0
   >	Period	190	0
   ?	Slash	191	0
   Function Area	Escape	Escape	27	0
   	F1	F1	112	0
   	F2	F2	113	0
   	F3	F3	114	0
   	F4	F4	115	0
   	F5	F5	116	0
   	F6	F6	117	0
   	F7	F7	118	0
   	F8	F8	119	0
   	F9	F9	120	0
   	F10	F10	121	0
   	F11	F11	122	0
   	F12	F12	123	0
   	ScrollLock	ScrollLock	145	0
   	Pause	Pause	19	0
   Control Area	Insert	Insert	45	0
   	Home	Home	36	0
   	PageUp	PageUp	33	0
   	Delete	Delete	46	0
   	End	End	35	0
   	PageDown	PageDown	34	0
   	ArrowUp	ArrowUp	38	0
   	ArrowLeft	ArrowLeft	37	0
   	ArrowDown	ArrowDown	40	0
   	ArrowRight	ArrowRight	39	0
   Number Area	NumLock	NumLock	144	0
   	/	NumpadDivide	111	3
   	*	NumpadMultiply	106	3
   	-	NumpadSubtract	109	3
   	+	NumpadAdd	107	3
   	Enter	NumpadEnter	13	3
   	.	NumpadDecimal	110	3
   	0	Numpad0	96	3
   	1	Numpad1	97	3
   	2	Numpad2	98	3
   	3	Numpad3	99	3
   	4	Numpad4	100	3
   	5	Numpad5	101	3
   	6	Numpad6	102	3
   	7	Numpad7	103	3
   	8	Numpad8	104	3
   	9	Numpad9	105	3