test availability of features object before inspecting

AaronWan · Jan 3, 2014 · df14e16 · df14e16
1 parent 56589c0
commit df14e16
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/Headroom.js b/src/Headroom.js
@@ -155,4 +155,4 @@ Headroom.options = {
     initial : 'headroom'
   }
 };
-Headroom.cutsTheMustard = features.rAF && features.bind && features.classList;
+Headroom.cutsTheMustard = typeof features !== 'undefined' && features.rAF && features.bind && features.classList;