From 54ec4fa28a7170f1e92693858a995e90797b0183 Mon Sep 17 00:00:00 2001
From: Max Prokhorov <prokhorov.max@outlook.com>
Date: Sat, 22 Sep 2018 09:23:59 +0300
Subject: [PATCH] attr() is undefined when elem doesnt have it

---
 code/html/custom.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/code/html/custom.js b/code/html/custom.js
index de0c5af7..2b37998c 100644
--- a/code/html/custom.js
+++ b/code/html/custom.js
@@ -359,7 +359,7 @@ function sendConfig(data) {
 function setOriginalsFromValues(force) {
     var force = (true === force);
     $("input,select").each(function() {
-        var initial = (null === $(this).attr("original"));
+        var initial = (undefined === $(this).attr("original"));
         if (force || initial) {
             $(this).attr("original", $(this).val());
         }