Treffer: Using Third-Party JavaScript.

As you'll have gathered by now, when you create a JavaScript application, you don't need to reinvent the wheel and recode all the functionality from scratch every time—JavaScript has many, many functions available for you to use, and you can create your own reusable functions and objects, too. But it goes even further than that—you can also make use of third-party code libraries and APIs, and there are many available on the Web these days. But it's knowing where, why, and how that's the key, and that's where this chapter comes in. [ABSTRACT FROM AUTHOR]