From 1a26094e50b2804015715d65c2cfd3c00eb4ff15 Mon Sep 17 00:00:00 2001
From: Kenny Shepard <kshepard@gmail.com>
Date: Wed, 7 Oct 2015 11:49:35 -0400
Subject: [PATCH] Add empty option for non-required dynamic selects

---
 src/editors/select.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/editors/select.js b/src/editors/select.js
index bdb87b96e..b6c394d37 100644
--- a/src/editors/select.js
+++ b/src/editors/select.js
@@ -299,6 +299,12 @@ JSONEditor.defaults.editors.select = JSONEditor.AbstractEditor.extend({
       }
       
       var prev_value = this.value;
+
+      // Add an empty option for non-required dynamic select boxes
+      if(!this.isRequired()){
+        select_options.unshift(undefined);
+        select_titles.unshift(' ');
+      }
       
       this.theme.setSelectOptions(this.input, select_options, select_titles);
       this.enum_options = select_options;