JS - 禁止右键等代码

js 代码

function stop(){ 
        return false; 
    } 
    document.oncontextmenu = stop;//禁止右键
    document.oncopy = stop;//禁止复制
    document.onselectstart = stop;//禁止选取
    document.onkeydown = KeyPress;
    function  KeyPress(num){
        var keycode = event.keyCode;
        if(keycode == 8)//禁止退格健
        {
            event.keyCode = 0;
            return;
        }
        if(keycode >= 112 && keycode <= 123)//禁止f1-f12
        {
            event.keyCode = 0 ;
            event.returnValue = false;
            return;
        }
    }

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