fix weird case with jQuery

diff --git a/js/src/collapse.js b/js/src/collapse.js
index 9c7ff927766563606a4096351501dd08ffd4eb02..9da673cc9f9a266501a7a44772634a7472718666 100644 (file)
--- a/js/src/collapse.js
+++ b/js/src/collapse.js
@@ -289,8 +289,8 @@ class Collapse {
     if (Util.isElement(this._config.parent)) {
       parent = this._config.parent
 
-      // It's a jQuery object
-      if (typeof this._config.parent.jquery !== 'undefined') {
+      // it's a jQuery object
+      if (typeof this._config.parent.jquery !== 'undefined' || typeof this._config.parent[0] !== 'undefined') {
         parent = this._config.parent[0]
       }
     } else {