JavaScript Goodies, Second Edition is based on the most popular JavaScript tutorials at HTMLGoodies.com. It starts with the basics, including JavaScript syntax and common errors readers may encounter. It then continues with detailed lessons covering

Enabling mouse events
Using variables
Working with math operators
Writing loops Later chapters explain complex add-ons, including clocks and counters, passwords, and animation. The book finishes with a series of useful appendices readers can refer to for a quick reference of basic JavaScript features and commands.