The wijupload widget supports batch or single uploads and has an API for displaying upload progress.
For a listing of all of the options, methods, and events available on this widget, please see the API docs for wijupload.
This widget is an adaptive widget in v3 20142.* and later. If you are running v3.20141.x or earlier, it is not adaptive. You can download the latest here: Downloads Page.
An adaptive widget is different from a jQuery UI widget in that you can use it in both mobile and non-mobile web applications. To use it in non-mobile applications, just use the regular help. To use it in mobile applications:
These steps are demonstrated in the jQuery Mobile topic.