js获取及判断键盘按键的⽅法本⽂实例讲述了js获取及判断键盘按键的⽅法。分享给⼤家供⼤家参考，具体如下：
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 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
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
js argumentskeyCode 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event对象的keyCode属性判断输⼊的键值
eg：
复制代码代码如下:
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
js获取键盘事件：
<script type="text/javascript" language=JavaScript charset="UTF-8">
var e = event || window.event || arguments.callee.caller.arguments[0];
if(e && e.keyCode==27){ // 按 Esc
//要做的事情
}
if(e && e.keyCode==113){ // 按 F2
//要做的事情
}
if(e && e.keyCode==13){ // 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。
JS判断键盘按键
keydown = disableRefresh;
function disableRefresh(evt){
evt = (evt) ? evt : window.event
if (evt.keyCode) {
if(evt.keyCode == 116){
//do something
}
}
}
键码同上例所⽰。
使⽤event对象的keyCode属性判断输⼊的键值
eg：
if(event.keyCode==13){
var ieKey=event.keyCode;//获得键值，数字形式的
var realkey=String.fromCharCode(ieKey) //将数字形式的键值转化为真实的按键alert(realkey);
}
键值对应表同上例所⽰
希望本⽂所述对⼤家JavaScript程序设计有所帮助。

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