/*restore the previous refernce to Backbone before the last version of Backbone.js was loaded*/ var lastBackboneParsed = Backbone.noConflict(); //verify the Backbone in the global scope points to previous version console.log(Backbone["I'm the previous owner of Backbone in the global scope"]); //logs true /*verify Backbone.js is contained in the new lastBackboneParsed namespace and not Backbone namespace*/ console.log(lastBackboneParsed.VERSION) //logs 1.0.0