Backbone

Overview:

Backbone is lightweight, flexible and offers a minimalist solution to separating concerns in an application. It is not super opinionated and does not lock a developer into the Backbone way of doing things. Out of the box, the framework supports a persistence layer, RESTful sync, models, views, collections, event-driven communication, templating and routing. Developers are not locked into these constructs and have the ability to provide their own implementations.

Highlights:

• Follows Model-View* 
• Minimal size with about 800 lines of code
• RESTful models
• Simple views (Must provide view-rendering mechanism)
• No impact on server architecture
• No impact on file organization
• Does not need to own the entire page
• Choose your own template engine (String-based handlebars.js is most common).
• Routing (optional)

Pros:

• Backbone is incredibly simple, it only has four major components: Collections, Models, Views and a Router.
• Allows developers the ability to easily override parts of the framework to suit custom needs.
• Can leverage extension community to address common problems (i.e. Marionette )

Cons:

• Backbone's documentation lacks real world examples. Documentation is not detailed enough.
• Must provide custom solutions or adopt a solution from the extension community.
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AngularJS

TBA