JavaScript Double Dollar Sign

Question

I understand the use of the (single) dollar sign in popular JavaScript libraries such as jQuery and Prototype. I also understand the significance of the double dollar sign i

Answer 1

As far as I know, the dollar sign is just a regular character that can be used in variable names. It could be a convention to signify a property that shouldn't be messed around with.

My guess is that the author used $$guid to avoid clashing with existing property names. He could probably have used __guid or something similar instead.