JQuery was so simple to learn, to use and looked just so beautiful. While YUI seemed extremely difficult. Even the experienced developers would agree that the learning curve of YUI is very steep.
I learned my lesson the hard way. I started developing a fairly complex web application for a startup of which I am a part. After the first milestone our features had grown exponentially. So with that I had several jQuery plugins added to the each page. Besides the framework I had tipsy, jQuery UI, ScrollTo and 8 other plugins. The code was 77KB.
More that the footprint of the code what worried me was the sheer unorganized nature of the code. I tried hard to get it in the best shape but it never really happened. It was difficult for me to understand just exactly what was wrong.
Rebbecca Murphey’s “jQuery Divide” is making rounds of the internet and indeed it is very informative.