(function ($, doc, $$) {                $.init();                $.ready(function () {                    var cityPicker = new $.PopPicker({                        layer: 2                    });                    $.ajax({                        type: 'POST',                        url: '@Url.Action("GetSelectList","Banji")',                        data: '',                        dataType: 'json',                        success:function(data) {                             cityPicker.setData(data);                        },                        error: function () {                            alert('error');                        }                    });                    var showCityPickerButton = doc.getElementById('showCityPicker');                    var cityResult = doc.getElementById('cityResult');                    var students = doc.getElementById('students');                    showCityPickerButton.addEventListener('tap', function(event) {                        cityPicker.show(function (items) {                            cityResult.innerText = "" + items[0].text + "->" + items[1].text;                            $$('#students').html('');                            $.ajax({                                type: 'POST',                                url: '@Url.Action("GetSelectList","Student")',                                data: { banjiId: items[1].value },                                dataType: 'json',                                success: function (data) {                                    console.log(data);                                    var str = '';                                    data.forEach(function (e) {                                        str +='
' + e.text + '
';                                    })                                    $$('#students').html(str);                                },                                error: function () {                                    alert('error');                                }                            });                                                        //返回 false 可以阻止选择框的关闭                            //return false;                        });                    }, false);                });    })(mui, document, jQuery);