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

$ is an ordinary symbol character, thus "$", "$$", "$$$" are ordinary variables.

the meaning of $ depends upon the libraries that are in use; in jQuery the $-function creates a jquery object from a css selector, e.g. $("DIV") is a collection of all DIVs in the current document.