Radios Select is the helper utility which provides new custom look of the
ordinary radios form element via jQuery/CSS (when you create this element from
your own module). The main feature of Radios Select is ability to format output of radios field like "select" form element or dropdown menu. Once Radios Select module enabled you can create Radios Select form element by just adding new property "#radios_select" to any standard radios element:

These modern frameworks provide developers an easy path to organizing their code using variations of a pattern known as MVC (Model-View-Controller). MVC separates the concerns in an application down into three parts

JavaScript ‘MVC’ frameworks that can help us structure our code don’t always strictly follow the above pattern. Some frameworks will include the responsibility of the Controller in the View (e.g Backbone.js) whilst others add their own opinionated components into the mix as they feel this is more effective.