From af1ad45431f50fe6854c3cab15cfe7a92eb1d41c Mon Sep 17 00:00:00 2001
From: Rob Garrison <wowmotty@gmail.com>
Date: Tue, 9 Oct 2018 06:47:16 -0500
Subject: [PATCH] Core: Fix JS error. Closes #699

---
 js/jquery.keyboard.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/js/jquery.keyboard.js b/js/jquery.keyboard.js
index 416b8fb7..5afd74f1 100644
--- a/js/jquery.keyboard.js
+++ b/js/jquery.keyboard.js
@@ -1125,7 +1125,7 @@ http://www.opensource.org/licenses/mit-license.php
 				if (o.useWheel && base.wheel) {
 					// get keys from other layers/keysets (shift, alt, meta, etc) that line up by data-position
 					// target mousewheel selected key
-					$key = last.wheel_$Keys && last.wheelIndex > -1 ? last.wheel_$Keys.eq(last.wheelIndex) : $key;
+					$key = last.wheel_$Keys.length && last.wheelIndex > -1 ? last.wheel_$Keys.eq(last.wheelIndex) : $key;
 				}
 				action = $key.attr('data-action');
 				if (timer - (last.eventTime || 0) < o.preventDoubleEventTime) {