From 565c42e0ff298a7562cd7406191bfabb44a558b8 Mon Sep 17 00:00:00 2001
From: Jeroen Akkerman <Jeroen_akkerman1@hotmail.com>
Date: Tue, 11 Jan 2022 21:28:22 +0100
Subject: [PATCH] Add hasOwnProperty check

---
 src/js/easymde.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/js/easymde.js b/src/js/easymde.js
index ccc04a0..f4a0c70 100644
--- a/src/js/easymde.js
+++ b/src/js/easymde.js
@@ -239,7 +239,9 @@ function createToolbarButton(options, enableActions, enableTooltips, shortcuts,
 
     if (options.attributes) {
         for (var attribute in options.attributes) {
-            el.setAttribute(attribute, options.attributes[attribute]);
+            if (Object.prototype.hasOwnProperty.call(options.attributes, attribute)) {
+                el.setAttribute(attribute, options.attributes[attribute]);
+            }
         }
     }