keycode 1 = 鼠标左键
keycode 2 = 鼠标右键
keycode 3 = Cancel
keycode 4 = 鼠标中键
keycode 8 = BackSpace 
keycode 9 = Tab 
keycode 12 = Clear（未知） 
keycode 13 = Enter 
keycode 16 = Shift_L 
keycode 17 = Control_L 
keycode 18 = Alt_L 
keycode 19 = Pause 
keycode 20 = Caps_Lock 
keycode 27 = Escape 
keycode 32 = space 
keycode 33 = Prior（PageUp键） 
keycode 34 = Next（PageDown键） 
keycode 35 = End 
keycode 36 = Home 
keycode 37 = Left 
keycode 38 = Up 
keycode 39 = Right 
keycode 40 = Down 
keycode 41 = Select（未知） 
keycode 42 = Print（PrintScreen键） 
keycode 43 = Execute（未知） 
keycode 45 = Insert 
keycode 46 = Delete 
keycode 47 = Help（未知） 
keycode 48 = 0 equal braceright
keycode 49 = 1 exclam onesuperior 
keycode 50 = 2 quotedbl twosuperior 
keycode 51 = 3 section threesuperior 
keycode 52 = 4 dollar 
keycode 53 = 5 percent 
keycode 54 = 6 ampersand 
keycode 55 = 7 slash braceleft 
keycode 56 = 8 parenleft bracketleft 
keycode 57 = 9 parenright bracketright 
keycode 65 = a A 
keycode 66 = b B 
keycode 67 = c C 
keycode 68 = d D 
keycode 69 = e E EuroSign 
keycode 70 = f F 
keycode 71 = g G 
keycode 72 = h H 
keycode 73 = i I 
keycode 74 = j J 
keycode 75 = k K 
keycode 76 = l L 
keycode 77 = m M mu 
keycode 78 = n N 
keycode 79 = o O 
keycode 80 = p P 
keycode 81 = q Q at 
keycode 82 = r R 
keycode 83 = s S 
keycode 84 = t T 
keycode 85 = u U 
keycode 86 = v V 
keycode 87 = w W 
keycode 88 = x X 
keycode 89 = y Y 
keycode 90 = z Z 
keycode 96 = KP_0 KP_0（小键盘数字0） 
keycode 97 = KP_1 KP_1（小键盘数字1） 
keycode 98 = KP_2 KP_2（小键盘数字2） 
keycode 99 = KP_3 KP_3（小键盘数字3） 
keycode 100 = KP_4 KP_4（小键盘数字4） 
keycode 101 = KP_5 KP_5（小键盘数字5） 
keycode 102 = KP_6 KP_6（小键盘数字6） 
keycode 103 = KP_7 KP_7（小键盘数字7） 
keycode 104 = KP_8 KP_8（小键盘数字8） 
keycode 105 = KP_9 KP_9（小键盘数字9） 
keycode 106 = KP_Multiply KP_Multiply（小键盘乘） 
keycode 107 = KP_Add KP_Add（小键盘加）
keycode 108 = KP_Separator KP_Separator（小键盘回车键）
keycode 109 = KP_Subtract KP_Subtract（小键盘减） 
keycode 110 = KP_Decimal KP_Decimal（小键盘小数点） 
keycode 111 = KP_Divide KP_Divide（小键盘除） 
keycode 112 = F1 
keycode 113 = F2 
keycode 114 = F3 
keycode 115 = F4 
keycode 116 = F5 
keycode 117 = F6 
keycode 118 = F7 
keycode 119 = F8 
keycode 120 = F9 
keycode 121 = F10 
keycode 122 = F11 
keycode 123 = F12 
keycode 124 = F13 
keycode 125 = F14 
keycode 126 = F15 
keycode 127 = F16 
keycode 128 = F17 
keycode 129 = F18 
keycode 130 = F19 
keycode 131 = F20 
keycode 132 = F21 
keycode 133 = F22 
keycode 134 = F23 
keycode 135 = F24 
keycode 136 = Num_Lock 
keycode 137 = Scroll_Lock（未知） 
keycode 187 = acute grave（未知） 
keycode 188 = comma semicolon（未知）（逗号 分号） 
keycode 189 = minus underscore （减号 下划线）
keycode 190 = period colon （未知 冒号）
keycode 192 = numbersign apostrophe（未知 单引号） 
keycode 210 = plusminus hyphen macron （未知 & ^）
keycode 211 = 
keycode 212 = copyright registered（未知） 
keycode 213 = guillemotleft guillemotright（未知） 
keycode 214 = masculine ordfeminine（未知） 
keycode 215 = ae AE（未知） 
keycode 216 = cent yen（未知） 
keycode 217 = questiondown exclamdown（未知） 
keycode 218 = onequarter onehalf threequarters（未知） 
keycode 220 = less greater bar（小于号 大于号 未知） 
keycode 221 = plus asterisk asciitilde（加号 星号 未知） 
keycode 227 = multiply division（乘 除）
keycode 228 = acircumflex Acircumflex（未知） 
keycode 229 = ecircumflex Ecircumflex（未知） 
keycode 230 = icircumflex Icircumflex（未知） 
keycode 231 = ocircumflex Ocircumflex（未知）
keycode 232 = ucircumflex Ucircumflex（未知） 
keycode 233 = ntilde Ntilde（未知） 
keycode 234 = yacute Yacute（未知） 
keycode 235 = oslash Ooblique（未知） 
keycode 236 = aring Aring（未知） 
keycode 237 = ccedilla Ccedilla（未知） 
keycode 238 = thorn THORN（未知） 
keycode 239 = eth ETH（未知） 
keycode 240 = diaeresis cedilla currency（未知） 
keycode 241 = agrave Agrave atilde Atilde（未知） 
keycode 242 = egrave Egrave（未知） 
keycode 243 = igrave Igrave（未知） 
keycode 244 = ograve Ograve otilde Otilde（未知） 
keycode 245 = ugrave Ugrave（未知） 
keycode 246 = adiaeresis Adiaeresis（未知） 
keycode 247 = ediaeresis Ediaeresis（未知） 
keycode 248 = idiaeresis Idiaeresis（未知） 
keycode 249 = odiaeresis Odiaeresis（未知） 
keycode 250 = udiaeresis Udiaeresis（未知） 
keycode 251 = ssharp question backslash（未知） 
keycode 252 = asciicircum degree（未知） 
keycode 253 = 3 sterling（未知） 
keycode 254 = Mode_switch（未知）

如果要使用组合键，则可以利用event.ctrlKey，event.shiftKey，event .altKey值为true或false，判断是否按下了ctrl键、shift键以及alt键。

例：event.ctrlKey=true && event.keycode=65

JS键盘KEYCODE值参考