Fix issue #27

README.md

@@ -390,6 +390,17 @@ let deepFlattenedArray3 = helpful.deepFlattenArray([[0, 1], [2, [3, 4, [5, [6]]]
 
 **Return Type:** Array (`Array(5) [0, 1, 2, 3, 4]`)
 
+### differenceOfObjects
+Finds the difference of two objects (any keys that are present in the second object are removed from the first)
+```javascript
+let differenceOfObjs = helpful.differenceOfObjects({"a": 1, "b": 2}, {"b": 3, "c": 4}); // {"a": 1}
+```
+**Parameters:**
+- object1: Object (`{"a": 1, "b": 2}`)
+- object2: Object (`{"b": 3, "c": 4}`)
+
+**Return Type:** Object (`{"a": 1}`)
+
 ## Hex
 
 ### hex.convertFromString

helpful.js

@@ -235,6 +235,22 @@
 		return res;
 	}
 
+	helpful.differenceOfObjects = function(object1, object2){
+		if(Object.keys(object1).length === 0 || Object.keys(object2).length === 0) {
+			return [];
+		}
+		let array1 = Object.keys(object1);
+		let array2 = Object.keys(object2);
+		for(let i = 0; i < array1.length; i++){
+			for(let j = 0; j < array2.length; j++){
+				if(array1[i] == array2[j]){
+					delete object1[array1[i]]; 
+				}
+			}
+		}
+		return object1;
+	}
+
 	helpful.hex = {};
 
 	/* Modified from https://github.com/TogaTech/tEnvoy  */

test/tester.js

@@ -211,6 +211,13 @@ describe("Tests", function() {
 			let actual = helpful.deepFlattenArray([[0, 1], [2, [3, 4, [5, [6]]]]]);
 			assert.deepEqual(expected, actual);
 		});
+
+		i++;
+		it(`${i}: differenceOfObjects - Should remove any keys from the first object that are presented in the second object`, function() {
+			let expected = {"a": 1};
+			let actual = helpful.differenceOfObjects({"a": 1, "b": 2}, {"b": 3, "c": 4});
+			assert.deepEqual(expected, actual);
+		});
 
 	});
 	describe("Hex", function() {