這段代碼有許多不足之處 可優(yōu)化的地方有許多 親各位大佬指教

畢竟對于mui理解有限 我就不對下面代碼進(jìn)行講解

function choosePhoto() {
                    if (mui.os.plus) {
                        var buttonTit = [{
                            title: "拍照"
                        }, {
                            title: "從手機(jī)相冊選擇"
                        }];

                        plus.nativeUI.actionSheet({
                            title: "上傳圖片",
                            cancel: "取消",
                            buttons: buttonTit
                        }, function(b) { /*actionSheet 按鈕點(diǎn)擊事件*/
                            switch (b.index) {
                                case 0:
                                    break;
                                case 1:
                                    getImage(); /*拍照*/
                                    break;
                                case 2:
                                    galleryImg(); /*打開相冊*/
                                    break;
                                default:
                                    break;
                            }
                        })
                    }
                };


                // 拍照獲取圖片
                function getImage() {
                    //調(diào)用相機(jī)
plus.camera.getCamera().captureImage(function(e) {
                        //獲取file對象entry
plus.io.resolveLocalFileSystemURL(e, function(entry) {
                            var path = entry.toLocalURL();
                            entry.file(function(file) {
                                vm.paths.push(path)
                                $('.getPhoto').val(file.name)
                                vm.fileName = file.name
//new plus.io.FileReader()方法
                                var reader = new plus.io.FileReader();
                            
reader.onloadend = function(e) {
//e獲取到對象        e.target.result是圖片base64
                                upload(e.target.result, file.name)  
                                }
                                reader.readAsDataURL(file);
                            })
                        }, function(e) {
                            mui.toast("讀取拍照文件錯誤：" + e.message);
                        });
                    });
                }

                //從相冊中選擇圖片 
                function galleryImg() {
                    // 從相冊中選擇圖片
                    plus.gallery.pick(function(path) {
                plus.io.resolveLocalFileSystemURL(path, function(entry) {
                            entry.file(function(file) {
                                var paths = entry.toLocalURL();
                                vm.fileName = file.name
                                vm.paths.push(paths)
                                $('.getPhoto').val(file.name)
                            
                                var reader = new plus.io.FileReader();
                                reader.onloadend = function(e) {
                                    upload(e.target.result, file.name)
                                }
                                reader.readAsDataURL(file);
                            })
                        }, function(e) {
                            plus.nativeUI.toast("讀取拍照文件錯誤：" + e.message);
                        });
                    });
            
                function upload(base64, fileName) {
                    var wt = plus.nativeUI.showWaiting();
                    mui.ajax({
                        type: "POST",
                        url: zfyurl + "/app/api/order/uploadFile",
                        data: {
                            base64: base64, //base64數(shù)據(jù)
                            fileName: fileName
                        },
                        dataType: "json",
                        success: function(response) {
                            plus.nativeUI.closeWaiting();
                            if (response.code == 'M000000') {
                                vm.enclosure = response.info
                                mui.toast("上傳成功");
                            } else {
                                mui.toast("上傳失敗")
                            }
                        },
                        error: function(err) {
                            plus.nativeUI.closeWaiting();
                            console.log(JSON.stringify(err))
                        
                }