Reflow Mixin Example

viewmixin.js

//... Omitted for brevity

var ViewMixin = {
        addView: function (itemModel) {
            
            var newView = ViewFactory.create(itemModel);            
            if (!newView) {
                return;
            }
            var insertPos = Document.getInsertPosition();
            newView.insertIntoDom(insertPos);
        }
};

//... In another file

_.extend(BoxView.prototype, ViewMixin);