event 事件 keyCode 

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			window.onload = function(){
				
				document.onkeydown = function(ev){
					var oEvent = ev || event;
				
					alert(oEvent.keyCode);
				}	
			}
		</script>
	</head>
	
	<body>
	</body>
</html>

　　

posted @ 2016-03-12 15:12  mingjixiaohui  阅读(160)  评论(0)    收藏  举报