I have been working on a project where I need data grouped or summarized by date, and I wanted to make use of Backbone and Marionette with its CompositeViews and ItemViews so I whipped up an example, check it out below
It makes use of a Marionette CompositeView to create a table and then takes that and an ItemView to create rows that are wrapped with the Twitter Bootstrap accordion control to do the collapsing of the rows, how sweet is that??