Getting list item versioning by JSOM

In a SharePoint hosted app in a SharePoint online (SPO), I have to retrieve (for a simple print out page/report) a list of tasks, and retrieve versioned history of the task (as the user see when he/she edit an item).

I have realized, that I have to roll up all versions and read "Body" to get the same list.

But is it possible using JSOM from a SharePoint hosted app (aspx) page?

(I'm using CAML to retrieve my items).

Jorgen