ng2-file-upload函数

uploader.onWhenAddingFileFailed = function (item /*{File|FileLikeObject}*/, filter, options) {
  console.info('onWhenAddingFileFailed', item, filter, options);
};//添加文件失败的回调
uploader.onAfterAddingFile = function (fileItem) {
  console.info('onAfterAddingFile', fileItem);
};//添加一个文件之后的回调
uploader.onAfterAddingAll = function (addedFileItems) {
  console.info('onAfterAddingAll', addedFileItems);
};//添加完所有文件之后的回调
uploader.onBeforeUploadItem = function (item) {
  console.info('onBeforeUploadItem', item);
};//要上传文件之前的回调
uploader.onProgressItem = function (fileItem, progress) {
  console.info('onProgressItem', fileItem, progress);
};//上传文件的进度（开始上传后调用非常频繁）
uploader.onProgressAll = function (progress) {
  console.info('onProgressAll', progress);
};//整体的上传进度的回调（开始上传后调用非常频繁）
uploader.onSuccessItem = function (fileItem, response, status, headers) {
  console.info('onSuccessItem', fileItem, response, status, headers);
};//上传一个文件成功的回调
uploader.onErrorItem = function (fileItem, response, status, headers) {
  console.info('onErrorItem', fileItem, response, status, headers);
};//上传一个文件错误的回调
uploader.onCancelItem = function (fileItem, response, status, headers) {
  console.info('onCancelItem', fileItem, response, status, headers);
};//取消上传一个文件的回调
uploader.onCompleteItem = function (fileItem, response, status, headers) {
  console.info('onCompleteItem', fileItem, response, status, headers);
};//完成上传一个文件的回调
uploader.onCompleteAll = function () {
  console.info('onCompleteAll');
};//完成上传所有文件的回调