1 files changed, 4 insertions, 0 deletions
diff --git a/src/Angular.js b/src/Angular.js
index 39a6e91d..8793274c 100644
--- a/src/Angular.js
+++ b/src/Angular.js
@@ -44,6 +44,10 @@ var isVisible = isVisible || function (element) {
   return jQuery(element).is(":visible");
 };
 
+function isDefined(value){
+  return typeof value !== 'undefined';
+}
+
 function log(a, b, c){
   var console = window['console'];
   switch(arguments.length) {