diff --git a/helpful.js b/helpful.js
index d39db91..2c2b117 100644
--- a/helpful.js
+++ b/helpful.js
@@ -397,6 +397,38 @@
 		}
 		return bytes;
 	}
+    
+    helpful.differenceOfObjects = function(object1, object2) {
+	    if (object1 == null) {
+		  return {};
+	    }
+	    if (object2 == null) {
+		 return object1;
+	    }
+
+	    let result = {};
+	    let keys1 = Object.keys(object1);
+
+	    for (let i = 0; i < keys1.length; i++) {
+		    let key = keys1[i];
+		
+		    if (!(key in object2)) {
+			 result[key] = object1[key];
+		    }
+	    }
+
+	  return result;
+    }
+
+
+    console.log(helpful.differenceOfObjects({"a": 1, "b": 2}, {"b": 3, "c": 4}));
+
+
+    console.log(helpful.differenceOfObjects({"a": 1, "b": 2}, {"a": 3, "b": 4}));
+
+
+    console.log(helpful.differenceOfObjects({"a": 1, "b": 2}, {"c": 3, "d": 4}));
+
 
 	return helpful;
 }));