Js中获取键盘的事件

使用方法：

<script type="text/javascript" language=JavaScript charset="UTF-8">
      document.onkeydown=function(event){
            var e = event || window.event || arguments.callee.caller.arguments[];
            if(e && e.keyCode==){ // 按 Esc
                //要做的事情
              }
            if(e && e.keyCode==){ // 按 F2
                 //要做的事情
               }
             if(e && e.keyCode==){ // enter 键
                 //要做的事情
            }
        };
</script>
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。

参考目录：

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  = BackSpace BackSpace
keyCode  = Tab Tab
keyCode  = Clear
keyCode  = Enter
keyCode  = Shift_L
keyCode  = Control_L
keyCode  = Alt_L
keyCode  = Pause
keyCode  = Caps_Lock
keyCode  = Escape Escape
keyCode  = space
keyCode  = Prior
keyCode  = Next
keyCode  = End
keyCode  = Home
keyCode  = Left
keyCode  = Up
keyCode  = Right
keyCode  = Down
keyCode  = Select
keyCode  = Print
keyCode  = Execute
keyCode  = Insert
keyCode  = Delete
keyCode  = Help
keyCode  =  equal braceright
keyCode  =  exclam onesuperior
keyCode  =  quotedbl twosuperior
keyCode  =  section threesuperior
keyCode  =  dollar
keyCode  =  percent
keyCode  =  ampersand
keyCode  =  slash braceleft
keyCode  =  parenleft bracketleft
keyCode  =  parenright bracketright
keyCode  = a A
keyCode  = b B
keyCode  = c C
keyCode  = d D
keyCode  = e E EuroSign
keyCode  = f F
keyCode  = g G
keyCode  = h H
keyCode  = i I
keyCode  = j J
keyCode  = k K
keyCode  = l L
keyCode  = m M mu
keyCode  = n N
keyCode  = o O
keyCode  = p P
keyCode  = q Q at
keyCode  = r R
keyCode  = s S
keyCode  = t T
keyCode  = u U
keyCode  = v V
keyCode  = w W
keyCode  = x X
keyCode  = y Y
keyCode  = z Z
keyCode  = KP_0 KP_0
keyCode  = KP_1 KP_1
keyCode  = KP_2 KP_2
keyCode  = KP_3 KP_3
keyCode  = KP_4 KP_4
keyCode  = KP_5 KP_5
keyCode  = KP_6 KP_6
keyCode  = KP_7 KP_7
keyCode  = KP_8 KP_8
keyCode  = KP_9 KP_9
keyCode  = KP_Multiply KP_Multiply
keyCode  = KP_Add KP_Add
keyCode  = KP_Separator KP_Separator
keyCode  = KP_Subtract KP_Subtract
keyCode  = KP_Decimal KP_Decimal
keyCode  = KP_Divide KP_Divide
keyCode  = F1
keyCode  = F2
keyCode  = F3
keyCode  = F4
keyCode  = F5
keyCode  = F6
keyCode  = F7
keyCode  = F8
keyCode  = F9
keyCode  = F10
keyCode  = F11
keyCode  = F12
keyCode  = F13
keyCode  = F14
keyCode  = F15
keyCode  = F16
keyCode  = F17
keyCode  = F18
keyCode  = F19
keyCode  = F20
keyCode  = F21
keyCode  = F22
keyCode  = F23
keyCode  = F24
keyCode  = Num_Lock
keyCode  = Scroll_Lock
keyCode  = acute grave
keyCode  = comma semicolon
keyCode  = minus underscore
keyCode  = period colon
keyCode  = numbersign apostrophe
keyCode  = plusminus hyphen macron
keyCode  =
keyCode  = copyright registered
keyCode  = guillemotleft guillemotright
keyCode  = masculine ordfeminine
keyCode  = ae AE
keyCode  = cent yen
keyCode  = questiondown exclamdown
keyCode  = onequarter onehalf threequarters
keyCode  = less greater bar
keyCode  = plus asterisk asciitilde
keyCode  = multiply division
keyCode  = acircumflex Acircumflex
keyCode  = ecircumflex Ecircumflex
keyCode  = icircumflex Icircumflex
keyCode  = ocircumflex Ocircumflex
keyCode  = ucircumflex Ucircumflex
keyCode  = ntilde Ntilde
keyCode  = yacute Yacute
keyCode  = oslash Ooblique
keyCode  = aring Aring
keyCode  = ccedilla Ccedilla
keyCode  = thorn THORN
keyCode  = eth ETH
keyCode  = diaeresis cedilla currency
keyCode  = agrave Agrave atilde Atilde
keyCode  = egrave Egrave
keyCode  = igrave Igrave
keyCode  = ograve Ograve otilde Otilde
keyCode  = ugrave Ugrave
keyCode  = adiaeresis Adiaeresis
keyCode  = ediaeresis Ediaeresis
keyCode  = idiaeresis Idiaeresis
keyCode  = odiaeresis Odiaeresis
keyCode  = udiaeresis Udiaeresis
keyCode  = ssharp question backslash
keyCode  = asciicircum degree
keyCode  =  sterling
keyCode  = Mode_switch
使用event对象的keyCode属性判断输入的键值
eg：if(event.keyCode==)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　 　　 0X48
H　　0X72　 　　 0X49
I　　0X73　 　　 0X50
J　　0X74　  　　0X51
K　　0X75　  　　0X52
L　　0X76　  　　0X53
M　　0X77　 　　 0X54
N　　0X78 　 　　0X55
O　　0X79 　 　　0X56
P　　0X80 　 　　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