This is a class that represents a collection of DOM elements. It is a wrapper for the element objects created in the javascript library of choice. You can create a new element by using evoShop.$() or evoShop.$create():

var lis = evoShop.$( 'li' ); // collection of all li elements

var new_li = evoShop.$create( 'li' ); // creates new element of the given tag