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event.keyCode与event.which

 
 
//Netscape/Firefox/Opera中不支持 window.event.keyCode,需要用event.which代替
//IE用event.keCode方法获取当前被按下的键盘按键值,
//而NetScape/FireFox/Opera用的则是event.which


例:
<html><body><script type="text/javascript">function noNumbers(e){var keynumvar keycharvar numcheck if(window.event) // IE{keynum = e.keyCode}else if(e.which) // Netscape/Firefox/Opera{keynum = e.which}keychar = String.fromCharCode(keynum)numcheck = /d/return !numcheck.test(keychar)}</script> <form><input type="text" onkeypress="return noNumbers(event)" /></form></html>

 

event.keyCode与event.which