Question

I have been going through some jQuery functionality.

Can any one please give me some idea of what the difference is between the use of $ and $$?

Answer 1

On jQuery documentation there is no $$ statement. jQuery has a default selector with $ character. Maybe this script uses another javascript package and has some conflicts with jQuery. In this case, you can use jquery.NoConflict to avoid this kind of problem, and set another jquery selector.

Something like:

var s = jQuery.noConflict();

// something with new jQuery selector
s("div p").hide();

// something with another library using $()
$("content").style.display = 'none';

If your code has somethig like to avoid conflicts: var $$ = jquery.noConfict();, you can use $$ as a jquery selector:

$$("#element").method();

See more on the documentation:
http://api.jquery.com/jQuery.noConflict/