jQuery键盘事件及判断光标(兼容firefox写法)

Java代码 
<script language="JavaScript" type="text/javascript">    
$(function(){  
$(document).keydown(function(event){  
   //兼容  
    var e = window.event || event;  
    var k = e.keyCode || e.which;  
    //IE,firefox 兼容  
    var obj = e.srcElement ? e.srcElement : e.target;  
    if(k == "13" && obj.id == "hello"){  
        alert("keyCode13");  
    }  
              
    });  
});  
</script>  
 
<div><input id="hello" type="text" style="width: 200px;" /></div>   



摘自 springlin