JavaScript and jQuery is more like a mix of magazine and web page than a textbook, with image backgrounds to hold your interest that also turn out to be carefully chosen visual metaphors.

Ryan Boudreaux includes all the code snippets you'll need in this demo of how to create an image hover-preview effect using HTML, CSS, and JavaScript.

Query is the world's most popular JavaScript library (by far) in terms of sites using it in production today. Learn the basics of jQuery in 100 seconds.