diff --git a/algorithms/JavaScript/src/arrays/single-occurring-element.js b/algorithms/JavaScript/src/arrays/single-occurring-element.js
index 4437029f..1c8da89d 100644
--- a/algorithms/JavaScript/src/arrays/single-occurring-element.js
+++ b/algorithms/JavaScript/src/arrays/single-occurring-element.js
@@ -13,3 +13,6 @@ function singleOccurringElement(arr) {
 
 const arr = [2, 5, 7, 3, 1, 8, 8, 9, 4, 2, 7, 1, 4, 9, 5];
 console.log(singleOccurringElement(arr));
+
+// Input: [2, 5, 7, 3, 1, 8, 8, 9, 4, 2, 7, 1, 4, 9, 5]
+// Output: 3