原文地址：http://blog.csdn.net/chenhj1988918/article/details/7534922
keypress api 文档： http://api.jquery.com/keypress/
event.keycode值大全 1 keycode 8 = BackSpace BackSpace 2 keycode 9 = Tab Tab 3 keycode 12 = Clear 4 keycode 13 = Enter 5 keycode 16 = Shift_L 6 keycode 17 = Control_L 7 keycode 18 = Alt_L 8 keycode 19 = Pause 9 keycode 20 = Caps_Lock 10 keycode 27 = Escape Escape 11 keycode 32 = space space 12 keycode 33 = Prior 13 keycode 34 = Next 14 keycode 35 = End 15 keycode 36 = Home 16 keycode 37 = Left 17 keycode 38 = Up 18 keycode 39 = Right 19 keycode 40 = Down 20 keycode 41 = Select 21 keycode 42 = Print 22 keycode 43 = Execute 23 keycode 45 = Insert 24 keycode 46 = Delete 25 keycode 47 = Help 26 keycode 48 = 0 equal braceright 27 keycode 49 = 1 exclam onesuperior 28 keycode 50 = 2 quotedbl twosuperior 29 keycode 51 = 3 section threesuperior 30 keycode 52 = 4 dollar 31 keycode 53 = 5 percent 32 keycode 54 = 6 ampersand 33 keycode 55 = 7 slash braceleft 34 keycode 56 = 8 parenleft bracketleft 35 keycode 57 = 9 parenright bracketright 36 keycode 65 = a A 37 keycode 66 = b B 38 keycode 67 = c C 39 keycode 68 = d D 40 keycode 69 = e E EuroSign 41 keycode 70 = f F 42 43 keycode 71 = g G 44 keycode 72 = h H 45 keycode 73 = i I 46 keycode 74 = j J 47 keycode 75 = k K 48 keycode 76 = l L 49 keycode 77 = m M mu 50 keycode 78 = n N 51 keycode 79 = o O 52 keycode 80 = p P 53 keycode 81 = q Q at 54 keycode 82 = r R 55 keycode 83 = s S 56 keycode 84 = t T 57 keycode 85 = u U 58 keycode 86 = v V 59 keycode 87 = w W 60 keycode 88 = x X 61 keycode 89 = y Y 62 keycode 90 = z Z 63 keycode 96 = KP_0 KP_0 64 keycode 97 = KP_1 KP_1 65 keycode 98 = KP_2 KP_2 66 keycode 99 = KP_3 KP_3 67 keycode 100 = KP_4 KP_4 68 keycode 101 = KP_5 KP_5 69 keycode 102 = KP_6 KP_6 70 keycode 103 = KP_7 KP_7 71 keycode 104 = KP_8 KP_8 72 keycode 105 = KP_9 KP_9 73 keycode 106 = KP_Multiply KP_Multiply 74 keycode 107 = KP_Add KP_Add 75 76 keycode 108 = KP_Separator KP_Separator 77 keycode 109 = KP_Subtract KP_Subtract 78 keycode 110 = KP_Decimal KP_Decimal 79 keycode 111 = KP_Divide KP_Divide 80 keycode 112 = F1 81 keycode 113 = F2 82 keycode 114 = F3 83 keycode 115 = F4 84 85 86 keycode 116 = F5 87 keycode 117 = F6 88 keycode 118 = F7 89 keycode 119 = F8 90 keycode 120 = F9 91 keycode 121 = F10 92 keycode 122 = F11 93 keycode 123 = F12 94 keycode 124 = F13 95 keycode 125 = F14 96 keycode 126 = F15 97 keycode 127 = F16 98 keycode 128 = F17 99 keycode 129 = F18 100 keycode 130 = F19 101 keycode 131 = F20 102 keycode 132 = F21 103 keycode 133 = F22 104 keycode 134 = F23 105 keycode 135 = F24 106 keycode 136 = Num_Lock 107 keycode 137 = Scroll_Lock 108 keycode 187 = acute grave 109 keycode 188 = comma semicolon 110 keycode 189 = minus underscore 111 keycode 190 = period colon 112 keycode 192 = numbersign apostrophe 113 keycode 210 = plusminus hyphen macron 114 keycode 211 = 115 keycode 212 = copyright registered 116 keycode 213 = guillemotleft guillemotright 117 keycode 214 = masculine ordfeminine 118 keycode 215 = ae AE 119 keycode 216 = cent yen 120 keycode 217 = questiondown exclamdown 121 keycode 218 = onequarter onehalf threequarters 122 keycode 220 = less greater bar 123 keycode 221 = plus asterisk asciitilde 124 keycode 227 = multiply division 125 126 keycode 228 = acircumflex Acircumflex 127 keycode 229 = ecircumflex Ecircumflex 128 keycode 230 = icircumflex Icircumflex 129 keycode 231 = ocircumflex Ocircumflex 130 keycode 232 = ucircumflex Ucircumflex 131 keycode 233 = ntilde Ntilde 132 keycode 234 = yacute Yacute 133 keycode 235 = oslash Ooblique 134 keycode 236 = aring Aring 135 keycode 237 = ccedilla Ccedilla 136 keycode 238 = thorn THORN 137 keycode 239 = eth ETH 138 keycode 240 = diaeresis cedilla currency 139 keycode 241 = agrave Agrave atilde Atilde 140 keycode 242 = egrave Egrave 141 keycode 243 = igrave Igrave 142 keycode 244 = ograve Ograve otilde Otilde 143 keycode 245 = ugrave Ugrave 144 keycode 246 = adiaeresis Adiaeresis 145 keycode 247 = ediaeresis Ediaeresis 146 keycode 248 = idiaeresis Idiaeresis 147 keycode 249 = odiaeresis Odiaeresis 148 keycode 250 = udiaeresis Udiaeresis 149 keycode 251 = ssharp question backslash 150 keycode 252 = asciicircum degree 151 keycode 253 = 3 sterling 152 keycode 254 = Mode_switch 153 154 使用event对象的keyCode属性判断输入的键值 155 eg：if(event.keyCode==13)alert(“enter!”); 156 键值对应表 157 A 0X65 U 0X85 158 B 0X66 V 0X86 159 C 0X67 W 0X87 160 D 0X68 X 0X88 161 E 0X69 Y 0X89 162 F 0X70 Z 0X90 163 G 0X71 0 0X48 164 H 0X72 1 0X49 165 I 0X73 2 0X50 166 J 0X74 3 0X51 167 K 0X75 4 0X52 168 L 0X76 5 0X53 169 M 0X77 6 0X54 170 N 0X78 7 0X55 171 O 0X79 8 0X56 172 P 0X80 9 0X57 173 Q 0X81 ESC 0X1B 174 R 0X82 CTRL 0X11 175 S 0X83 SHIFT 0X10 176 T 0X84 ENTER 0XD 177 178 如果要使用组合键，则可以利用event.ctrlKey，event.shiftKey，event .altKey判断是否按下了ctrl键、shift键以及alt键