I had already used Moo.fx, Scriptaculous, TW-SACK, and Prototype. I had dabbled with RICO, Yahoo YUI, and other libraries.
So why did I change my mind about jQuery and why should you consider using it?
Simple. In just one glance at the source code of a page using jQuery you’ll see how easy it is to use, how much it accomplishes in so few lines of code, and how graceful it is.
And the code…
The code looked almost simple. Like nothing I had seen before. It made sense.
I started reading through the documentation and was amazed to see how much could be done with so little extra code.
You should use jQuery when you need
If you need super fancy effects for animation, drag and drop, and super smooth animation then you’ll probably want to use Prototype and one of the many great library created to enhance the effects.
You can download the source code (10k) and some excellent tutorials at the jQuery website.
jQuery was created by John Resig.