Summary

In this chapter, we had a refresher on JavaScript's DOM Scripting API and jQuery. We were introduced to the Composite Pattern and saw how it is used by the jQuery library. We saw how the Composite Pattern simplifies our workflow after we rewrote our example page without using jQuery, and later showcased an example of using the Composite Pattern in our applications. Finally, we were introduced to the Iterator Pattern and saw how well it pairs when used along with the Composite Pattern.

Now that we have completed our introduction on how the Composite Pattern plays an important role in the way we use jQuery methods every day, we can move on to the next chapter where we will showcase the Observer Pattern and the convenient way to utilize it in our pages using jQuery.