上拉加载不执行

pullupRefresh方法，页面加载完后执行了一次，数据出来了，但是之后页面再往上拉， pullupRefresh这个方法都不执行方法就不执行了，请大神帮我看看问题出在哪了：

 mui.init({//初始化下拉加载  
        pullRefresh: {  
            container: '.item',  
           /* down: {  
                auto: false,  
                callback: goods.pulldownRefresh()  
            },*/  
            up: {  
                auto: true,  
                contentrefresh: '正在加载...',  
                contentnomore:'没有更多数据了',//可选，请求完毕若没有更多数据时显示的提醒内容；  
                callback: goods.pullupRefresh  
            }  
        }  
    });  

"pullupRefresh": function(){  

        setTimeout(function() {  
           //传分类id过去  
            ajax("List2ShopId",{"type":goods.bindClickData.type,"offset":goods.bindClickData.count*(goods.bindClickData.page-1),"limit":goods.bindClickData.page*goods.bindClickData.count},function(data) {  

                if(data.rows.length>0){  
                   //上拉加载的具体业务逻辑  
                    goods.getGoodsList(goods.bindClickData.type);  
                    goods.bindClickData.page++;  
                   // mui('.item').pullRefresh().endPullupToRefresh(data.rows.length>0);  
                } else if(data.rows.length==0){  
                    goods.getGoodsList(type+1);  
                    goods.bindClickData.page=1;  
                    mui('.item').pullRefresh().refresh(data.rows.length==0);  
                    mui('.item').pullRefresh().endPullupToRefresh(data.rows.length=0);  
                }  
            });  
          //  mui('.item').pullRefresh().endPullupToRefresh(true); //参数为true代表没有更多数据了。  
          //  this.endPullupToRefresh(true);//true表示没有更多数据了  

        },1500)  
    },