Javascript Key Codes

Javascript assigns a numeric code to every key on a keyboard, including ones that control programs and interfaces.

Alphanumeric Keys

Key codes for alphanumeric and function keys are consecutively numbered. Alphanumeric and symbol keys also have Unicode values, expressed as a negative number with Unicode decimal code.

The 0 to 9 keys are codes 48 to 57
The A to Z keys are codes 65 to 90
Keys on the number pad are codes 96 to 105
Function keys F1 to F12 are 112 to 123.

For program clarity it is better to use Unicode negative decimal codes than alphanumeric key codes.

Table of Key Codes

These are keys that control the user interface and operating system. Not all keys appear on all keyboards.

Key	Code	Key	Code
Backspace	8	Print Screen	none
Tab	9	Insert	45
Enter	13	Delete	46
Shift	16	Windows Left	91
Control	17	Windows Right	92
Alt	18	Select	93
Break	19	Multiply	106
Caps Lock	20	Add	107
Escape	27	Separator	109
Space Bar	32	Subtract	109
Page Up	33	Decimal Point	110
Page Down	34	Divide	111
End	35	Num Lock	144
Home	36	Scroll Lock	145
Left Arrow	37
Up Arrow	38
Right Arrow	39
Down Arrow	40