Fix JS bug

www/local-notification.js

@@ -634,7 +634,9 @@ exports.convertIds = function (ids) {
 exports.getValueFor = function (options) {
     var keys = Array.apply(null, arguments).slice(1);
 
-    for (var key in keys) {
+    for (var i = 0; i < keys.length; i++) {
+        var key = keys[i];
+
         if (options.hasOwnProperty(key)) {
             return options[key];
         }