A lot of PHP frameworks have something called “collections” (though, I’m sure some of them use a different term). Basically, these are special classes whose sole purpose is to hold a bunch of the same type of objects within them. They usually provide some extra functions for working with those objects and also a bit of data protection by making the contained objects themselves private or otherwise unavailable. A lot of this intrinsic functionality is provided by using magic methods.

Javascript is inherently a classless object-oriented language, so performing a lot of the things we’re used to in say, PHP, doesn’t work the same way. This doesn’t mean that these things are impossible though. In fact, Javascript is extremely open-ended and very fluid in how it implements OOP. So what if we need to extend the existing functionality of a function of an object, effectively replicating method inheritance?