Example View Factory

viewfactory.js

var viewMappings = {
};

var addMapping = function (type, viewClass) {
    viewMappings[type] = viewClass;
};

var create = function (viewModel) {
    var ViewClass = viewMappings[viewModel.get("type")];
    if (ViewClass) {
        return new ViewClass({model: viewModel});
    }
};