js keyCode（键盘键码）

　　摘自：http://blog.csdn.net/dyllove98/article/details/8728657

* 网上收集的KeyCode值方便大家查找：

keycode 8 = BackSpace BackSpace 
keycode 9 = Tab Tab 
keycode 12 = Clear 
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 Escape 
keycode 32 = space space 
keycode 33 = Prior 
keycode 34 = Next 
keycode 35 = End 
keycode 36 = Home 
keycode 37 = Left 
keycode 38 = Up 
keycode 39 = Right 
keycode 40 = Down 
keycode 41 = Select 
keycode 42 = Print 
keycode 43 = Execute 
keycode 45 = Insert 
keycode 46 = Delete 
keycode 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 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 
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_Divide KP_Divide 
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 
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 division 
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 :

<script language="JavaScript">
    function keyevent(){
        if(event.keyCode==13)
        alert("#$%#%#^^%");
    }
    document.onkeydown = keyevent;
</script> 

*常用 keyCode:

event.keyCode值為37﹐38﹐39﹐40對應按下的方向鍵分別是 左﹐上﹐右﹐下 

"javascript:if (event.keyCode < 45 || event.keyCode > 57) event.returnValue = false;"); 

if(event.keycode==13)就代表按下的是回车键盘 

"javascript:if (event.keyCode > 45 && event.keyCode < 57) event.returnValue = false;");

*Demo:

<html>
<!--//this code by hongseheike-->
<head>
　　<script language="javascript">
　　　　ns4 = (document.layers) ? true : false;
　　　　ie4 = (document.all) ? true : false;
　　　　function keyDown(e){
　　　　　　if(ns4){
　　　　　　　　var nkey=e.which;
　　　　　　　　var iekey='现在是ns浏览器';
　　　　　　　　var realkey=String.fromCharCode(e.which);
　　　　　　}
　　　　　　if(ie4){
　　　　　　　　var iekey=event.keyCode;
　　　　　　　　var nkey='现在是ie浏览器';
　　　　　　　　var realkey=String.fromCharCode(event.keyCode);
　　　　　　　　if(event.keyCode==32){realkey='\' 空格\''}
　　　　　　　　if(event.keyCode==13){realkey='\' 回车\''}
　　　　　　　　if(event.keyCode==27){realkey='\' Esc\''}
　　　　　　　　if(event.keyCode==16){realkey='\' Shift\''}
　　　　　　　　if(event.keyCode==17){realkey='\' Ctrl\''}
　　　　　　　　if(event.keyCode==18){realkey='\' Alt\''}
　　　　　　}
　　　　　　alert('ns浏览器中键值:'+nkey+'\n'+'ie浏览器中键值:'+iekey+'\n'+'实际键为'+realkey);
　　　　} 
　　　　document.onkeydown = keyDown;
　　　　if(ns4){
　　　　　　document.captureEvents(Event.KEYDOWN);
　　　　}
　　</script>
</head>
<body>
　　<hr>
　　<center>
　　　　<h3>请按任意一个键。。。。</h3>
　　</center>
</body>
</html>