Summary
In this chapter, you were gently introduced to a set of traditional design patterns concerning the creation of objects. Some of those patterns are so basic, and yet essential at the same time, that you have probably already used them in one way or another.
Patterns such as Factory and Singleton are, for example, two of the most ubiquitous in object-oriented programming in general. However, in JavaScript, their implementation and significance are very different from what was thought up by the Gang of Four book. For example, Factory becomes a very versatile pattern that works in perfect harmony with the hybrid nature of the JavaScript language, that is, half object-oriented and half functional. On the other hand, Singleton becomes so trivial to implement that it's almost a non-pattern, but it carries a set of caveats that you should have learned to take into account.
Among the patterns you've learned in this chapter, the Builder pattern may seem the ...
