PopPicker控件报错

(function(mui, doc, $) {  
    mui.init({  
        swipeBack: true //启用右滑关闭功能  
    });  
    mui.plusReady(function() {  
        var cityPicker = new mui.PopPicker({  
            layer: 1  
        });  
        cityPicker.setData(cityData1);  
        $("#selectOpttion").on("tap", function() {  
            cityPicker.show(function(items) {  
                console.log(JSON.stringify(items[0]))  
                $("#selectOpttion input").val((items[0] || {}).text);  
                document.getElementsByName("paymentMethod")[0].value = (items[0] || {}).text;  
                document.getElementsByName("id")[0].value = (items[0] || {}).value;  
            });  
        });  
    })  
})(mui, document, jQuery)

在 new mui.PopPicker时报错
报错信息： Uncaught TypeError: undefined is not a function at b2b2c/html/order/order_mode.html:110