From 1bb0e726d188d138e06955315c06f16e616b7574 Mon Sep 17 00:00:00 2001
From: Vincent Wochnik <v.wochnik@gmail.com>
Date: Thu, 16 Feb 2017 09:45:34 +0100
Subject: [PATCH] Add check to getID() to return null if element has no set id

---
 src/getID.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/getID.js b/src/getID.js
index c4c6ab1..6849cff 100644
--- a/src/getID.js
+++ b/src/getID.js
@@ -5,5 +5,11 @@
  */
 export function getID( el )
 {
-  return `#${el.getAttribute( 'id' )}`;
+  const id = el.getAttribute( 'id' );
+
+  if( id !== null )
+  {
+    return `#${id}`;
+  }
+  return null;
 }