From 6ac4d42d28bcaf888e186dfd8795d4fb5956ced3 Mon Sep 17 00:00:00 2001
From: Jeremy Danyow <jdanyow@gmail.com>
Date: Tue, 5 Jan 2016 21:54:38 -0500
Subject: [PATCH] fix(ValueAttributeObserver): notify only when changing
 element value

fixes aurelia/framework#288
---
 src/element-observation.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/element-observation.js b/src/element-observation.js
index d4843c19..52a5a082 100644
--- a/src/element-observation.js
+++ b/src/element-observation.js
@@ -97,10 +97,11 @@ export class ValueAttributeObserver {
   }
 
   setValue(newValue) {
-    this.element[this.propertyName] =
-      (newValue === undefined || newValue === null) ? '' : newValue;
-
-    this.notify();
+    newValue = newValue === undefined || newValue === null ? '' : newValue;
+    if (this.element[this.propertyName] !== newValue) {
+      this.element[this.propertyName] = newValue;
+      this.notify();
+    }
   }
 
   notify() {