js中获取键盘事件

ゝ一纸荒年。 2021-06-26 16:06 498阅读 0赞

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 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
    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`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