DateBox is a jQueryMobile / Bootstrap / jQueryUI plugin that aims to make user interaction with dates and times simple and intuitive. It is a collaborative work, with a full range of features allowing easy implementation, and painless extensibility. New to version 4 is the inclusion of Bootstrap and jQueryUI operation, along with a new build system that makes adding the framework of your choice as easy as possible.
Upgrade Note: DateBox4 is backwards compatible with jQM-DateBox, however the namespace for the widget has changed. Any references in your own code to mobile.datebox or mobile-datebox must be updated to jtsage.datebox or jtsage-datebox.
Regressions / Maintainer Note: So, the reality is, it looks like development on jQM has pretty much ended. The news for jQueryUI doesn't look much better these days. The bootstrap versions *require* the jQueryUI widget code (see the install docs). This likely won't change. But, here is what this all means: The maintainer does not actively use the jQM or jQueryUI versions - expect regressions and visual bugs. When they are reported, he will fix them. Same probably with Bootstrap 3, as all of his projects (mostly) have moved to BS4.

General Look and Feel