Javascript 角度异步函数不';Don’不要等到完成了才继续

Javascript 角度异步函数不';Don’不要等到完成了才继续,javascript,angularjs,Javascript,Angularjs,我有一个上传功能,可以循环选择的文件并将它们添加到服务器文件系统中 上传功能: $scope.uploadImages = function () { for (var i = 0; i < $scope.imageModels.length; i++) { var $file = $scope.imageModels[i].file; (function (index) { $upload

我有一个上传功能,可以循环选择的文件并将它们添加到服务器文件系统中

上传功能:

$scope.uploadImages = function () {
        for (var i = 0; i < $scope.imageModels.length; i++) {
            var $file = $scope.imageModels[i].file;
            (function (index) {
                $upload
                    .upload({
                        url: "/api/upload/",
                        method: "POST",
                        data: { type: 'img', object: 'ship' },
                        file: $file
                    })
                    .progress(function (evt) {
                        $scope.imageProgress[index] = parseInt(100.0 * evt.loaded / evt.total);
                    })
                    .success(function (data) {
                        $scope.imageProgressbar[index] = 'success';

                        // Add returned file data to model
                        $scope.imageModels[index].Path = data.Path;
                        $scope.imageModels[index].FileType = data.FileType;
                        $scope.imageModels[index].FileSize = $scope.imageModels[index].file.size;

                        var image = {
                            Path: data.Path,
                            Description: $scope.imageModels[index].Description,
                            Photographer: $scope.imageModels[index].Photographer
                        };
                        $scope.images.push(image);
                    })
                    .error(function (data) {
                        $scope.imageProgressbar[index] = 'danger';
                        $scope.imageProgress[index] = 'Upload failed';

                        alert("error: " + data.ExceptionMessage);
                    });
            })(i);
        }
        return $scope.images;
    }
};
$scope.ship
不包含图像,当我调试时,它会开始上传图像,但不会等待图像完成,只执行下一行代码


我如何才能使其工作?因此,我要确保在继续之前完成
$scope.uploadImages
功能?

为了确保您的功能完成,您需要使用

下面是一个非常有用的视频教程,介绍如何使用它们:


您错误地使用了AJAX。如果上载是异步的,则
$scope.uploadImages()
将永远不会以您期望的方式返回值。在
.success
.error
回调期间,您需要调用另一个函数。我从这篇文章中找到了答案:
 $scope.create = function () {
    $scope.ship = {};

    // This function is asynchronous
    $scope.ship.Images = $scope.uploadImages();

    // Here $scope.ship don't contain any Images
    angular.extend($scope.ship, $scope.shipDetails);

    shipFactory.createShip($scope.ship).success(successPostCallback).error(errorCallback);
};