picker 怎么知道选中的是哪个

如图 如代码 选择的值获取不到

(function($) {  
            var picker = new $.PopPicker({  
                layer: 3  
            });  
            var result2 = $('#result0');  
            var dfeifjeifjeif=document.getElementById('result0');  
            var btns = $('#demo7');  
            btns.each(function(i, btn) {  
                btn.addEventListener('tap', function() {  
                    var wtf = [{  
                        value: '1',  
                        text: '西北高新区',  
                        children: [{  
                            value: '1',  
                            text: '轻工业',  
                            children: [{  
                                value: '515',  
                                text: '515'  
                            }]  
                        }, {  
                            value: '2',  
                            text: '郑大',  
                            children: [{  
                                value: '5dfef',  
                                text: '5fefe5'  
                            }]  
                        }]  
                    }];  
                    picker.setData(wtf);  
                    picker.show(function(getSelectedItems) {  
                        console.log(getSelectedItems);  
                        console.log(getSelectedItems.text);  
                        console.log(getSelectedItems);  
//                      console.log("进入show"+selectItems.value);  
//                      result2.innerText = selectItems.text;  
//                      result2.innerText = '123';  
//                      dfeifjeifjeif.innerText='fefefefefefefefefe';  
//                      console.log(selectItems.text);  
                    })  
                }, false);  
            });  
        })(mui);