| accept | File types that can be accepted. See [input accept Attribute](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#accept) | string | - | |
| beforeUpload | Hook function which will be executed before uploading. Uploading will be stopped with `false` or a rejected Promise returned. When returned value is `Upload.LIST_IGNORE`, the list of files that have been uploaded will ignore it. **Warning：this function is not supported in IE9** | (file, fileList) => boolean \| Promise<File> \| `Upload.LIST_IGNORE` | - | |
| customRequest | Override for the default xhr behavior allowing for additional customization and the ability to implement your own XMLHttpRequest | function | - | |
| disabled | Disable upload button | boolean | false | When customizing Upload children, please pass the disabled attribute to the child node at the same time to ensure the disabled rendering effect is consistent. |
| fileList | List of files that have been uploaded (controlled). Here is a common issue [#2423](https://github.com/ant-design/ant-design/issues/2423) when using it | [UploadFile](#uploadfile)\[] | - | |
| multiple | Whether to support selected multiple files. `IE10+` supported. You can select multiple files with CTRL holding down while multiple is set to be true | boolean | false | |
| onChange | A callback function, can be executed when uploading state is changing. It will trigger by every uploading phase. see [onChange](#onchange) | function | - | |
| onDrop | A callback function executed when files are dragged and dropped into the upload area | (event: React.DragEvent) => void | - | 4.16.0 |
| onDownload | Click the method to download the file, pass the method to perform the method logic, and do not pass the default jump to the new TAB | function(file): void | (Jump to new TAB) | |
| onPreview | A callback function, will be executed when the file link or preview icon is clicked | function(file) | - | |
| onRemove | A callback function, will be executed when removing file button is clicked, remove event will be prevented when the return value is false or a Promise which resolve(false) or reject | function(file): boolean \| Promise | - | |
- You can consult [jQuery-File-Upload](https://github.com/blueimp/jQuery-File-Upload/wiki#server-side) about how to implement server side upload interface.
- There is a mock example of [express](https://github.com/react-component/upload/blob/master/server.js) in rc-upload.
`onChange` will only trigger when the file is in the list, it will ignore any events removed from the list. Please note that there does exist a bug which makes an event still trigger even when the file is not in the list before `4.13.0`.
For compatible case, we return File object when `beforeUpload` return `false`. It will merge to `{ originFileObj: File }` in the next major version. Current version is compatible to get origin file by `info.file.originFileObj`. You can change this before a major release.
### Can still select files when uploading a folder in Safari?
Inside the upload component, we use the `directory` and `webkitdirectory` properties to control only directories can be selected. However, in Safari's implementation it doesn't seem to work. See [here](https://stackoverflow.com/q/55649945/3040605). Please try passing an additional `accept` attribute that cannot match any files. For example:
