Great syntax for events handling, DOM manipulation; great support of CSS3 & HTML5 features like media queries or touch devices detection etc.; can be extended with plugins written in CoffeeScript/Typescript languages (as I did). Some JS libraries are not so easy to understand at first glance but then you realize that they have their own way how things work internally! It's hard sometimes because there isn't any documentation about it - just code examples which don' t show all parts well enought if we want them as such :) However this doesn's something really bad since other people will help us out here too :D This plugin allows me solve many issues concerning mobile development by creating custom widgets using native UI elements from different platforms ios / android.