It has many useful template for design. It help us a lot of time. Addition, it was a good library for Mobile Web Application, it support some behaviours make your application look like native application, such as: navigation bar, button, panel...

Lots of demos for me to learn, in a simple WYSIWYG way. I can change little codes to create a prototype of my project. Furthermore, when I meet a problem difficult to solve, I will ask some community like stackoverflow.com for help, and it's not possible to find the answer in time.

Easy to use, powerful framework only when you use the functions provided.