1 files changed, 1 insertions, 1 deletions
diff --git a/src/JSON.js b/src/JSON.js
index 1dc5cc03..7fdbf1a1 100644
--- a/src/JSON.js
+++ b/src/JSON.js
@@ -126,7 +126,7 @@ function toJsonArray(buf, obj, pretty, stack) {
       var childPretty = pretty ? pretty + "  " : false;
       var keys = [];
       for(var k in obj) {
-        if (obj.hasOwnProperty(k) && obj[k] !== undefined) {
+        if (k!='this' && k!='$parent' && k.substring(0,2) != '$$' && obj.hasOwnProperty(k) && obj[k] !== undefined) {
           keys.push(k);
         }
       }