From 1b0894b74d21cfe3f2b8f726cdf325a6d93eddeb Mon Sep 17 00:00:00 2001
From: giuliof <giulio@glgprograms.it>
Date: Fri, 17 Apr 2020 23:13:47 +0200
Subject: [PATCH] [F.END] Avoid empty categories

---
 frontend/frontend.js | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/frontend/frontend.js b/frontend/frontend.js
index 3b9fe70..bd32e02 100644
--- a/frontend/frontend.js
+++ b/frontend/frontend.js
@@ -96,12 +96,14 @@ function zerocalcareDisplay() {
             eventElement.appendChild(dateElement);
             eventElement.appendChild(timeElement);
             eventElement.appendChild(locationElement);
-
-            if ('Corsi' in json_obj[i]['CATEGORIES']) {
-                eventsContainer[Corsi].appendChild(eventElement);
-            }
-            else {
-                coursesContainer[Eventi].appendChild(eventElement);
+            
+            if (typeof json_obj[i]['CATEGORIES'] === 'object') {
+                if ('Corsi' in json_obj[i]['CATEGORIES']) {
+                    eventsContainer[Corsi].appendChild(eventElement);
+                }
+                else {
+                    coursesContainer[Eventi].appendChild(eventElement);
+                }
             }
         }
     }