From f6b63df48a3f323cd1478c51760f332a86edff21 Mon Sep 17 00:00:00 2001
From: Jay El-Kaake <najibkaake@gmail.com>
Date: Thu, 9 Nov 2023 18:09:34 -0500
Subject: [PATCH] Fix issue https://github.com/glidejs/glide/issues/523 -
 "Slider cannot be initialized in iframe #523"

---
 src/components/html.js | 2 +-
 src/utils/dom.js       | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/components/html.js b/src/components/html.js
index 6e8a7127..d2ef86d5 100644
--- a/src/components/html.js
+++ b/src/components/html.js
@@ -48,7 +48,7 @@ export default function (Glide, Components, Events) {
         r = document.querySelector(r)
       }
 
-      if (r !== null) {
+      if (exist(r)) {
         Html._r = r
       } else {
         warn('Root element must be a existing Html node')
diff --git a/src/utils/dom.js b/src/utils/dom.js
index 91289ccf..a0001516 100644
--- a/src/utils/dom.js
+++ b/src/utils/dom.js
@@ -28,7 +28,8 @@ export function siblings (node) {
  * @return {Boolean}
  */
 export function exist (node) {
-  if (node && node instanceof window.HTMLElement) {
+  // We are usine duck-typing here because we can't use `instanceof` since if we're in an iframe the class instance will be different.
+  if (node && node.appendChild && node.isConnected) {
     return true
   }