From e31d50eedc849ac0624501d4d25ebc5f8d65a7f0 Mon Sep 17 00:00:00 2001
From: Pavel Reznikov <pashka.reznikov@gmail.com>
Date: Sat, 27 Feb 2016 18:47:24 -0800
Subject: [PATCH] check if element setup before detach

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

diff --git a/src/gridstack.js b/src/gridstack.js
index 213ae87..cddc055 100644
--- a/src/gridstack.js
+++ b/src/gridstack.js
@@ -576,7 +576,9 @@
             var maxHeight = 0;
             _.each(nodes, function(n) {
                 if (n._id === null) {
-                    n.el.remove();
+                    if (n.el) {
+                        n.el.remove();
+                    }
                 } else {
                     n.el
                         .attr('data-gs-x', n.x)