IOS的子页面无法滚动下拉

JS代码

mui.init({  
    swipeBack: true, //启用右滑关闭功能  
    pullRefresh: {  
        container: "#myOrderList", //待刷新区域标识，querySelector能定位的css选择器均可，比如：id、.class等  
        up: {  
            contentrefresh: "正在加载...", //可选，正在加载状态时，上拉加载控件上显示的标题内容  
            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: pullfreshup //必选，刷新函数，根据具体业务来编写，比如通过ajax从服务器获取新数据；  
        }  
    }  
});  
$(function() {  
    $(".order-info").on("tap", function() {  
        openWindow({  
            url: "../../html/order/order_view.html",  
            id: "order_view"  
        });  
    });  
});  

//上拉刷新  
function pullfreshup() {  
    setTimeout(function() {  
        orderList(currentPageNo);  
    }, 0);  
};  

function init() {  
    orderList(1);  
};  
//获取订单列表  
function orderList(pagenum) {  
    //  console.log(myOrderList)  
    requestAjax(myOrderList, {  
            page: pagenum, //当前页码  
            pageSize: pagesize, //每页数量  
        },  
        function(data) {  
            //          console.log("我的订单："+JSON.stringify(data));  
            var div = document.querySelector(".mui-content");  
            if (data.result == 1) {  
                console.log("订单列表aaaa：" + JSON.stringify(data));  
                var obj = data.data.result;  
                if (currentPageNo == 1) {  
                    div.innerHTML = "";  
                }  
                for (var i = 0; i < obj.length; i++) {  
                    //订单  
                    var orderObj = obj[i];  
                    //订单div对象  
                    var div_order_info = document.createElement("div");  
                    div_order_info.className = "order-info";  
                    div_order_info.order_id = obj[i].order_id //商品ID   
                    var orderinfocontent = [];  
                    //订单编号  
                    orderinfocontent.push('<div class="pd15" style="overflow:hidden">');  
                    orderinfocontent.push('<span style="color:#DA434E;" class="mui-pull-left">' + getOrderStatus(orderObj.status) + '</span>');  
                    orderinfocontent.push('<span class="mui-pull-right">订单号：' + orderObj.sn + '</span>');  
                    orderinfocontent.push('</div>');  
                    //订单商品列表  
                    var goodsItemList = orderObj.orderItemList;  
                    for (var j = 0; j < goodsItemList.length; j++) {  
                        orderinfocontent.push('<div class="mui-row" style="padding:20px 0;">');  
                        orderinfocontent.push('<div class="mui-col-xs-9">');  
                        orderinfocontent.push('<img src="' + goodsItemList[j].image + '" class="media-object" width="75" height="75"/>');  
                        orderinfocontent.push('<h4 class="mui-ellipsis-2">' + goodsItemList[j].name + '</h4>');  
                        orderinfocontent.push('<span>x' + goodsItemList[j].num + '</span>');  
                        orderinfocontent.push('</div>');  
                        orderinfocontent.push('<div class="mui-col-xs-3 mui-text-right price">');  
                        orderinfocontent.push('<span style="color:#DA434E;">&yen;' + goodsItemList[j].price + '</span>');  
                        orderinfocontent.push('</div>');  
                        orderinfocontent.push('</div>');  
                    }  
                    //实付款  
                    orderinfocontent.push('<div class="pd15" style="overflow:hidden">');  
                    orderinfocontent.push('<span class="mui-pull-left">实付款：&yen;' + orderObj.order_amount + '</span>');  
                    orderinfocontent.push('</div>');  

                    div_order_info.innerHTML = orderinfocontent.join('');  
                    div.appendChild(div_order_info);  
                    div_order_info.addEventListener("tap", function() {  
                        openWindow({  
                            url: "../../html/order/order_view.html?orderId=" + this.order_id,  
                            id: "order_view"  
                        });  
                    });  
                }  
                if (obj.length == 0) {  
                    div.innerHTML = '<div class="mui-scroll">' +  
                        '<div class="text" style="text-align: center;"><div class="textInfo">您还没有订单哦~~~</div></div>' +  
                        '</div>';  
                }  
                if (parseInt(data.data.totalPageCount) == currentPageNo) {  
                    mui('#myOrderList').pullRefresh().endPullupToRefresh(true);  
                } else {  
                    mui('#myOrderList').pullRefresh().endPullupToRefresh(false);  
                    currentPageNo += 1;  
                }  
            } else {  
                mui.toast(data.message || "未获取到数据!");  
            }  
        });  
}  
页面下拉内容容器  
<div class="mui-content">  
            <div class="mui-scroll-wrapper" id="myOrderList">  
                <div class="mui-scroll">  
                    <ul class="mui-table-view">  
                    </ul>  
                </div>  
            </div>  
        </div>  
报错信息  
[ERROR] : TypeError: 'undefined' is not an object (evaluating 'mui('#myOrderList').pullRefresh().endPullupToRefresh')  
file name:b2b2c/html/order/order_list.js  
line no:114

请大神们指教一二。IOS有问题。安卓正常