grunt dist

js/dist/carousel.js

@@ -387,7 +387,10 @@ var Carousel = (function ($) {
 
           if (typeof config === 'number') {
             data.to(config);
-          } else if (action) {
+          } else if (typeof action === 'string') {
+            if (data[action] === undefined) {
+              throw new Error('No method named "' + action + '"');
+            }
             data[action]();
           } else if (_config.interval) {
             data.pause();