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>

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;");

<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>

//Javascript Document

<hr>

<center>

<h3>请按任意一个键。。。。</h3>

</center>

</body>

</html>

**********************************************************************

使用javascript在WEB页面中截获键盘输入

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 　　0X85

B　　0X66　 V　　 0X86

C　　0X67　 W　　 0X87

D　　0X68　 X 　　0X88

E　　0X69　 Y　　 0X89

F　　0X70　 Z　　 0X90

G　　0X71　 0　　 0X48

H　　0X72　 1　　 0X49

I　　0X73　 2　　 0X50

J　　0X74　 3 　　0X51

K　　0X75　 4 　　0X52

L　　0X76　 5 　　0X53

M　　0X77　 6　　 0X54

N　　0X78 　7 　　0X55

O　　0X79 　8 　　0X56

P　　0X80 　9 　　0X57

Q　　0X81　ESC　　0X1B

R　　0X82　CTRL 　0X11

S　　0X83　SHIFT　0X10

T　　0X84　ENTER　0XD



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