From a282c22fc7bfc41d58466891b7e5a4e4a4ad977c Mon Sep 17 00:00:00 2001
From: dercodercom <andy@dercoder.com>
Date: Sat, 20 Jan 2018 17:58:25 +0100
Subject: [PATCH] Update tab.js

I'm using Tab.js with remove function and get an error "TypeError: container is undefined [more info]", with this check the error is fixed.
---
 js/src/tab.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/src/tab.js b/js/src/tab.js
index af296f74fe..7333f22a1f 100644
--- a/js/src/tab.js
+++ b/js/src/tab.js
@@ -142,7 +142,7 @@ class Tab {
 
   _activate(element, container, callback) {
     let activeElements
-    if (container.nodeName === 'UL') {
+    if (container && container.nodeName === 'UL') {
       activeElements = $(container).find(Selector.ACTIVE_UL)
     } else {
       activeElements = $(container).children(Selector.ACTIVE)