var EventListener={};
(
    function(obj){
        var arr=[];
        obj.getEvent=function(e){
            var keynum=null;
            
            
            if(window.event){        
                e = window.event
                keynum = e.keyCode
            } else {
                keynum = e.which;
            }
            
            e.keynum = keynum;
            return e;
        }
        
        var onkeypressfun=function(e){
            var keynum = obj.getEvent(e).keynum;
            
            for(var i=0;i<arr.length;i++){
                arr[i](keynum);
            }
        }
        //还是不行
        document.addEventListener("keypress",function(){onkeypressfun(event)},false);
        
        
        //_fun(keynum) 一个带参数的 函数
        obj.add = function(_fun){
            arr.add(_fun);
        }
    }
)(EventListener);