Opens a standard Open Folder dialog so that the user can select folders for the upload.
To be able to use this method, you should turn on the folder uploading feature using the folderProcessingMode property.
Note, the folder selection feature has several limitations:
- Chrome only - currently it works only in Chrome. For other browsers you may want to use the Java/ActiveX uploader. See the Uploading Folders in HTML5 Uploader ASP.NET for more details.
There is also an addFolder alias for this method. You can use both interchangeable.