The KeyboardEvent.location read-only property returns an
unsigned long representing the location of the key on the keyboard or other
input device.
Possible values are:
Constant
Value
Description
DOM_KEY_LOCATION_STANDARD
0
The key has only one version, or can't be distinguished between the left
and right versions of the key, and was not pressed on the numeric keypad
or a key that is considered to be part of the keypad.
DOM_KEY_LOCATION_LEFT
1
The key was the left-hand version of the key; for example, the left-hand
Control key was pressed on a standard 101 key US keyboard.
This value is only used for keys that have more than one possible
location on the keyboard.
DOM_KEY_LOCATION_RIGHT
2
The key was the right-hand version of the key; for example, the
right-hand Control key is pressed on a standard 101 key US
keyboard. This value is only used for keys that have more than one
possible location on the keyboard.
DOM_KEY_LOCATION_NUMPAD
3
The key was on the numeric keypad, or has a virtual key code that
corresponds to the numeric keypad.
Note: When NumLock is locked, Firefox
always returns DOM_KEY_LOCATION_NUMPAD for the keys on
the numeric pad. Otherwise, when NumLock is unlocked and
the keyboard actually has a numeric keypad, Firefox always returns
DOM_KEY_LOCATION_NUMPAD too. On the other hand, if the
keyboard doesn't have a keypad, such as on a notebook computer, some
keys become Numpad only when NumLock is locked. When such keys fires
key events, the location attribute value depends on the key. That
is, it must not be DOM_KEY_LOCATION_NUMPAD.
Note:NumLock key's key events indicate
DOM_KEY_LOCATION_STANDARD both on Firefox and Internet
Explorer.
DOM_KEY_LOCATION_MOBILENon-standardDeprecated
4
The key was on a mobile device; this can be on either a physical
keypad or a virtual keyboard.
DOM_KEY_LOCATION_JOYSTICKNon-standardDeprecated
5
The key was a button on a game controller or a joystick on a mobile
device.
