本文主要和大家分享js获取键盘事件的方法实例，希望能帮助到大家。
只要你定义了这些键的动作，你在浏览器里按下这些键就会响应，兼容目前所有浏览器。
js 里面的键盘事件经常用到，所以收集了键盘事件对应的键码来分享下： keyCode 8 = BackSpace BackSpace keyCode 9 = Tab TabkeyCode 12 = ClearkeyCode 13 = EnterkeyCode 16 = Shift_L keyCode 17 = Control_L keyCode 18 = Alt_L keyCode 19 = PausekeyCode 20 = Caps_Lock keyCode 27 = Escape Escape keyCode 32 = space keyCode 33 = Prior keyCode 34 = NextkeyCode 35 = EndkeyCode 36 = Home keyCode 37 = LeftkeyCode 38 = UpkeyCode 39 = RightkeyCode 40 = DownkeyCode 41 = SelectkeyCode 42 = PrintkeyCode 43 = Execute keyCode 45 = InsertkeyCode 46 = DeletekeyCode 47 = Help 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 CkeyCode 68 = d DkeyCode 69 = e E EuroSign keyCode 70 = f F keyCode 71 = g G keyCode 72 = h H keyCode 73 = i IkeyCode 74 = j J keyCode 75 = k KkeyCode 76 = l L keyCode 77 = m M mu keyCode 78 = n NkeyCode 79 = o OkeyCode 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 keyCode 97 = KP_1 KP_1 keyCode 98 = KP_2 KP_2 keyCode 99 = KP_3 KP_3 keyCode 100 = KP_4 KP_4 keyCode 101 = KP_5 KP_5 keyCode 102 = KP_6 KP_6 keyCode 103 = KP_7 KP_7 keyCode 104 = KP_8 KP_8 keyCode 105 = KP_9 KP_9 keyCode 106 = KP_Multiply KP_Multiply keyCode 107 = KP_Add KP_Add keyCode 108 = KP_Separator KP_Separator keyCode 109 = KP_Subtract KP_Subtract keyCode 110 = KP_Decimal KP_Decimal keyCode 111 = KP_pide KP_pide 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 124124 = 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 keyCode 187 = acute grave keyCode 188 = comma semicolon keyCode 189 = minus underscore keyCode 190 = period colon keyCode 192 = numbersign apostrophe keyCode 210 = plusminus hyphen macron keyCode 211 = keyCode 212 = copyright registered keyCode 213 = guillemotleft guillemotright keyCode 214 = masculine ordfeminine keyCode 215 = ae AE keyCode 216 = cent yen keyCode 217 = questiondown exclamdown keyCode 218 = onequarter onehalf threequarters keyCode 220 = less greater bar keyCode 221 = plus asterisk asciitilde keyCode 227 = multiply pision keyCode 228 = acircumflex Acircumflex keyCode 229 = ecircumflex Ecircumflex keyCode 230 = icircumflex Icircumflex keyCode 231 = ocircumflex Ocircumflex keyCode 232 = ucircumflex Ucircumflex keyCode 233 = ntilde Ntilde keyCode 234 = yacute Yacute keyCode 235 = oslash Ooblique keyCode 236 = aring Aring keyCode 237 = ccedilla Ccedilla keyCode 238 = thorn THORN keyCode 239 = eth ETH keyCode 240 = diaeresis cedilla currency keyCode 241 = agrave Agrave atilde Atilde keyCode 242 = egrave Egrave keyCode 243 = igrave Igrave keyCode 244 = ograve Ograve otilde Otilde keyCode 245 = ugrave Ugrave keyCode 246 = adiaeresis Adiaeresis keyCode 247 = ediaeresis Ediaeresis keyCode 248 = idiaeresis Idiaeresis keyCode 249 = odiaeresis Odiaeresis keyCode 250 = udiaeresis Udiaeresis keyCode 251 = ssharp question backslash keyCode 252 = asciicircum degree keyCode 253 = 3 sterling keyCode 254 = Mode_switch 使用event对象的keyCode属性判断输入的键值 eg：if(event.keyCode==13)alert(“enter!”); 键值对应表 A 0X65 U 0X85B 0X66 V 0X86C 0X67 W 0X87D 0X68 X 0X88E 0X69 Y 0X89F 0X70 Z 0X90G 0X71 0 0X48H 0X72 1 0X49I 0X73 2 0X50J 0X74 3 0X51K 0X75 4 0X52L 0X76 5 0X53M 0X77 6 0X54N 0X78 7 0X55O 0X79 8 0X56P 0X80 9 0X57Q 0X81 ESC 0X1BR 0X82 CTRL 0X11S 0X83 SHIFT 0X10T 0X84 ENTER 0XD如果要使用组合键，则可以判断是否同时按下了这几个键，比如ctrl键、shift键以及alt键的组合使用就可以判断是否多按下了ctrl键、shift键以及alt键
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