initData: function(){
      const thisApp = this;

      thisApp.data = [];

      const url = settings.db.url + '/' + settings.db.product;

      fetch(url)
        .then(function(rawResponse){
          return rawResponse.json();
        })
        .then(function(parsedResponse){
          console.log('parsedResponse', parsedResponse);

          /* save parsedResponse as thisApp.data.products */

          thisApp.data.products = parsedResponse;

          /* execute initMenu method */

          thisApp.initMenu();

        });

      console.log('thisApp.data', JSON.stringify(thisApp.data));

    }