The utility class consists of a set of methods for implementing Backbone utility. Following are two methods that can be used to manipulate the Backbone.js utility:
1) Backbone.noConflict: It returns the Backbone objects back to its original value and provides a facility to store reference to a backbone. It can be used to embed backbone on third-party websites, where you don't want to thrash the existing backbone.
2) Backbone.$: This property is used when you have multiple copies of jQuery on the page, or simply want to tell Backbone to use a particular object as its DOM / Ajax library.