I've been using jQuery for quite some time now and it has never disappointed me in any way. It is the most value javascript library I have come across.
It provides an easy to use and well documented API, which guarantees cross browser compatibility between popular modern browsers.
jQuery provides functionality for DOM Traversing and Manipulation, Events, CSS, Browser Effects, AJAX and much much more.
I can recommend everyone that works with javascript to use this library, it will increases productivity, compatibility and efficiency of your application.
Keep up the good work.
jQuery changes the way of writing javascript. With it you can easily access all kinds of elements in HTML document. Using jQuery you no longer need to worry about the compatibility issues of IE 6, 7, 8 or version x.x.