What does $$ mean in Javascript?

Question

I am looking at some javascript code and it has this in a function:

$$(\'.CssClass\').each(function(x) { .... } )

I get that the intent is

Answer 1

Are you looking at a library such as mootools by chance? This is used as a short-hand to certain types of objects by accessing the DOM. They do things like $('myElement') to access page elements for example.