getKeyName.js

var keyCodeMap = {
    8: 'Backspace',
    9: 'Tab',
    13: 'Enter',
    16: 'Shift',
    17: 'Ctrl',
    18: 'Alt',
    19: 'Pause',
    20: 'Caps Lock',
    27: 'Escape',
    32: 'Space',
    33: 'Page Up',
    34: 'Page Down',
    35: 'End',
    36: 'Home',
    37: 'Left',
    38: 'Up',
    39: 'Right',
    40: 'Down',
    42: 'Print Screen',
    45: 'Insert',
    46: 'Delete',

    48: '0',
    49: '1',
    50: '2',
    51: '3',
    52: '4',
    53: '5',
    54: '6',
    55: '7',
    56: '8',
    57: '9',

    65: 'A',
    66: 'B',
    67: 'C',
    68: 'D',
    69: 'E',
    70: 'F',
    71: 'G',
    72: 'H',
    73: 'I',
    74: 'J',
    75: 'K',
    76: 'L',
    77: 'M',
    78: 'N',
    79: 'O',
    80: 'P',
    81: 'Q',
    82: 'R',
    83: 'S',
    84: 'T',
    85: 'U',
    86: 'V',
    87: 'W',
    88: 'X',
    89: 'Y',
    90: 'Z',

    91: 'Windows',
    93: 'Right Click',

    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: 'Numpad *',
    107: 'Numpad +',
    109: 'Numpad -',
    110: 'Numpad .',
    111: 'Numpad /',

    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',
    182: 'My Computer',
    183: 'My Calculator',
    186: ';',
    187: '=',
    188: ',',
    189: '-',
    190: '.',
    191: '/',
    192: '`',
    219: '[',
    220: '\\',
    221: ']',
    222: '\''
};
/**
 * @desc 根据keycode获得键名
 * @param  {Number} keycode 
 * @return {String}
 */
function getKeyName(keycode) {
    if (keyCodeMap[keycode]) {
        return keyCodeMap[keycode];
    } else {
        console.log('Unknow Key(Key Code:' + keycode + ')');
        return '';
    }
};

module.exports = getKeyName;