I like that it's very easy to integrate with my existing codebase without having too much additional overhead or learning curve required for others who are not familiar with JS libraries/frameworks such as this one - they have many options available including drag-and drop functionality which makes them easier than other solutions in some cases (but also more complex).
Some examples could be improved but overall good choice if you want something quick & dirty and don't care about design choices made by developers working at your organization. We're using jquery ui datepicker widget and we needed an input field where users can type dates into so their data would automatically populate when selecting another item from our list view.