an object that maps the key codes of strange keys to a string so that they can be logged more easily.

keymapping.js

var keyMappings = {
    8:"backspace",
    9:"tab",
    13:"enter",
    16:"shift",
    17:"ctrl",
    18:"alt",
    19:"pause break",
    20:"caps lock",
    27:"escape",
    33:"page up",
    34:"page down",
    35:"end",
    36:"home",
    37:"left arrow",
    38:"up arrow",
    39:"right arrow",
    40:"down arrow",
    45:"insert",
    46:"delete",
    91:"left window key",
    92:"right window key",
    93:"select key",
    96:"numpad 0",
    97:"numpad 1",
    98:"numpad 2",
    99:"numpad 3",
    100:"numpad 4",
    101:"numpad 5",
    102:"numpad 6",
    103:"numpad 7",
    104:"numpad 8",
    105:"numpad 9",
    106:"multiply",
    107:"add",
    109:"subtract",
    110:"decimal point",
    111:"divide",
    112:"f1",
    113:"f2",
    114:"f3",
    115:"f4",
    116:"f5",
    117:"f6",
    118:"f7",
    119:"f8",
    120:"f9",
    121:"f10",
    122:"f11",
    123:"f12",
    144:"num lock",
    145:"scroll lock",
    186:"semi-colon",
    187:"equal sign",
    188:"comma",
    189:"dash",
    190:"period",
    191:"forward slash",
    192:"grave accent",
    219:"open bracket",
    220:"back slash",
    221:"close braket",
    222:"single quote"
}