Pagination in Backbone.js
var Paginated = Backbone.Collection.extend({

    pagination : function(perPage, page) {
       page = page-1;
       var collection = this;
       collection = _(collection.rest(perPage*page));
       collection = _(collection.first(perPage));
       return collection.map( function(model) { return model.toJSON() } );
    }
});