Elegant.

Singleton is a javascript object. so, with
Singleton.__instance = this;

we are creating a property __instance on the Singleton object and setting its value to this.

The if condition checks if the Singleton object has __instance property on it and returns that if its present, so, basically using the same "this" object everytime.

What I don't get is calling 'Singleton' from within 'Singleton'. Obviously this is allowed so we have some kind of closure and that's why __instance keeps the instance value like a ststic.

thank you for this. The differences between these two methods eseems like one of those instances where actually knowing the subtle differences could save you from a serious headache.

I think i understand the logic of what's going on here, but how does the .__instance work? I can't seem to find any documentation on it.

yeah I had a similar experience. Much simpler than I first thought.

This one gave me way more trouble that it ought to have.

it would have been nice to know that you do not need to create the MyObject 'class'. I kept defining my own and it was throwing off the tests because I didn't give it any methods