Jquery Key Event mapping

gistfile1.coffee

KeyCodes =
  K_CANCEL: 3
  K_HELP: 6
  K_BACK_SPACE: 8
  K_TAB: 9
  K_CLEAR: 12
  K_RETURN: 13
  K_ENTER: 14
  K_SHIFT: 16
  K_CONTROL: 17
  K_ALT: 18
  K_PAUSE: 19
  K_CAPS_LOCK: 20
  K_ESCAPE: 27
  K_SPACE: 32
  K_PAGE_UP: 33
  K_PAGE_DOWN: 34
  K_END: 35
  K_HOME: 36
  K_LEFT: 37
  K_UP: 38
  K_RIGHT: 39
  K_DOWN: 40
  K_PRINTSCREEN: 44
  K_INSERT: 45
  K_DELETE: 46
  K_0: 48
  K_1: 49
  K_2: 50
  K_3: 51
  K_4: 52
  K_5: 53
  K_6: 54
  K_7: 55
  K_8: 56
  K_9: 57
  K_SEMICOLON: 59
  K_EQUALS: 61
  K_A: 65
  K_B: 66
  K_C: 67
  K_D: 68
  K_E: 69
  K_F: 70
  K_G: 71
  K_H: 72
  K_I: 73
  K_J: 74
  K_K: 75
  K_L: 76
  K_M: 77
  K_N: 78
  K_O: 79
  K_P: 80
  K_Q: 81
  K_R: 82
  K_S: 83
  K_T: 84
  K_U: 85
  K_V: 86
  K_W: 87
  K_X: 88
  K_Y: 89
  K_Z: 90
  K_CONTEXT_MENU: 93
  K_NUMPAD0: 96
  K_NUMPAD1: 97
  K_NUMPAD2: 98
  K_NUMPAD3: 99
  K_NUMPAD4: 100
  K_NUMPAD5: 101
  K_NUMPAD6: 102
  K_NUMPAD7: 103
  K_NUMPAD8: 104
  K_NUMPAD9: 105
  K_MULTIPLY: 106
  K_ADD: 107
  K_SEPARATOR: 108
  K_SUBTRACT: 109
  K_DECIMAL: 110
  K_DIVIDE: 111
  K_F1: 112
  K_F2: 113
  K_F3: 114
  K_F4: 115
  K_F5: 116
  K_F6: 117
  K_F7: 118
  K_F8: 119
  K_F9: 120
  K_F10: 121
  K_F11: 122
  K_F12: 123
  K_F13: 124
  K_F14: 125
  K_F15: 126
  K_F16: 127
  K_F17: 128
  K_F18: 129
  K_F19: 130
  K_F20: 131
  K_F21: 132
  K_F22: 133
  K_F23: 134
  K_F24: 135
  K_NUM_LOCK: 144
  K_SCROLL_LOCK: 145
  K_COMMA: 188
  K_PERIOD: 190
  K_SLASH: 191
  K_BACK_QUOTE: 192
  K_OPEN_BRACKET: 219
  K_BACK_SLASH: 220
  K_CLOSE_BRACKET: 221
  K_QUOTE: 222
  K_META: 224