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Corresponding table of keycode code in JavaScript (function implementation)

Source: Internet
Author: User
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<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 = 'ns browser now ';
VaR realkey = string. fromcharcode (E. Which );
}
If (ie4 ){
VaR iekey = event. keycode;
VaR nkey = 'ie browser now ';
VaR realkey = string. fromcharcode (event. keycode );
If (event. keycode = 32) {realkey = '\ 'space \''}
If (event. keycode = 13) {realkey = '\' press enter \''}
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 browser key value: '+ nkey +' \ n' + 'ie browser key value: '+ iekey +' \ n' + 'actual key is' + realkey );
}
Document. onkeydown = keydown;
If (ns4 ){
Document. captureevents (event. keydown );}
</SCRIPT>
</Head>
<Body>
// JavaScript document
<HR>
<Center>
<H3> press any key .... </H3>
</Center>
</Body>
</Html>

**************************************** ******************************
Use JavaScript to intercept keyboard input on the web page
Use the keycode attribute of the event object to determine the Input key value
Eg: If (event. keycode = 13) Alert ("Enter !");
Key value table
A 0x65 u 0x85
B 0x66 v 0x86
C 0x67 w 0x87
D 0x68X0x88
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

If you want to use the combination key, you can use event. ctrlkey, event. shiftkey, event. altkey to determine whether Ctrl, shift, and ALT keys are pressed.

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