JavaScript 经典代码（10）

<script language="javascript">
//coded by windy_sk 20021013 <windy_sk@126.com>

var ie = (document.getElementById && document.all);

document.onkeyup = function(e) {
 if(ie) e = event;
 var keycode = e.keyCode;
 var realkey = String.fromCharCode(keycode);
 var str = "keycode: " + keycode + "  realkey: " + realkey;
 document.getElementById("keyup").value = str;
}

document.onkeydown =function(e) {
 if(ie) e = event;
 var keycode = e.keyCode;
 var realkey = String.fromCharCode(keycode);
 var str = "keycode: " + keycode + "  realkey: " + realkey;
 document.getElementById("keydown").value = str;
}

document.onkeypress = function(e) {
 if(ie) e = event;
 var keycode = e.keyCode;
 var realkey = String.fromCharCode(keycode);
 var str = "keycode: " + keycode + "  realkey: " + realkey;
 document.getElementById("keypress").value = str;
}
</script>

keydown: 　<input id="keydown"  style="width: 400px"><br>

keyup: 　　<input id="keyup"    style="width: 400px"><br>

keypress:　<input id="keypress" style="width: 400px"><br>