There is nothing simple about creating effective, cross-browser, JavaScript code. In addition to the normal challenge of writing clean code you have the added complexity of dealing with obtuse browser complexities. To counter-act this JavaScript developers frequently construct some set of common, reusable, functionality in the form of JavaScript library. These libraries frequently vary in content and complexity but one constant remains: They need to be easy to use, be constructed with the least amount of overhead, and be able to work in all browsers that you target.

It stands to reason, then, that understanding how the very best JavaScript libraries are constructed and maintained can provide great insight into how your own code can be constructed. This book sets out to uncover the techniques and secrets encapsulated by these code bases into a single resource.