可用于 IE / Firefox / Opera 下的键盘捕获处理代码：

<script language="JavaScript" type="text/javascript"> function isKeyTrigger(e,keyCode){ var argv = isKeyTrigger.arguments; var argc = isKeyTrigger.arguments.length; var bCtrl = false; if(argc > 2){ // 如果存在第3个传入参数,则作为是否判断按下ctrl键标志 bCtrl = argv[2]; } var bAlt = false; if(argc > 3){ // 如果存在第4个传入参数,则作为是否判断按下ctrl键标志 bAlt = argv[3]; } var nav4 = window.Event ? true : false; if(typeof e == 'undefined') { e = event; } if( bCtrl && !((typeof e.ctrlKey != 'undefined') ? e.ctrlKey : e.modifiers & Event.CONTROL_MASK > 0)){ return false; } if( bAlt && !((typeof e.altKey != 'undefined') ? e.altKey : e.modifiers & Event.ALT_MASK > 0)){ return false; } var whichCode = 0; if (nav4) whichCode = e.which; else if (e.type == "keypress" || e.type == "keydown") whichCode = e.keyCode; else whichCode = e.button; return (whichCode == keyCode); } function KeyOn_CtrlEnter(e){ if(isKeyTrigger(e,13,true)){ //doSomething(); alert('Ctrl+Enter being Pressed.'); } } </script> <textarea name="my_comment" onkeydown="javascript:return KeyOn_CtrlEnter(event);"> </textarea>