JavaScript and jQuery are becoming more and more popular – and they are used in most web sites today.
After the 90s and 00s, in which JavaScript has been misused and abused of, library as jQuery, Script.aculo.us, Dojo, MooTools and Prototype have emerged and changed the way in which we interact with web sites.
Some time ago I prepared a JavaScript + jQuery training, that covers JavaScript and jQuery over a period of 3 days. The companion slides are now available on SlideShare:
The companion JavaScript guide, on which I worked while I was at the Open University, is available here.