Oops, sorry I never follow this up. What libraries like Backbone all have in common at the core is that they use setter methods to trigger custom bound listene

Oops, sorry I never follow this up. What libraries like Backbone all have in common at the core is that they use setter methods to trigger custom bound listeners/events . When these custom events are fired, they update the multiple variables/objects that are bound directly to them. For someone who is learning JavaScript OOP for the first time on my current project, this makes a lot of sense and seems pretty exciting.