JavaScript developers commonly rely on collections of reusable JavaScript code--written by themselves or by someone else at their company. Alternatively, they rely on code from a third party. But in all these cases they need to know how to either construct a cross-browser library from scratch or be adept at using and maintaining their library of choice. In Secrets of the JavaScript Ninja, JavaScript expert John Resig reveals the inside know-how of the elite JavaScript programmers. Written to be accessible to JavaScript developers with intermediate-level skills, this book will give you the knowledge you need to create a cross-browser JavaScript library.