Why I should use jQuery?
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.
What about 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.
When you can use jQuery?
You should use jQuery when you need:
* A small library that gives you powerful control over the Document Object Model
* With very little effort or work on your part
* Quick access to AJAX
* Without a lot of bloat (overhead - wasted code)
* And some basic animation effects to spice things up
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.
Where to get it?
You can download the source code (15k), a lot of plugins and read some excellent tutorials at the jQuery website. jQuery was created by John Resig.