From 7796e0cd6a17e6dc298acddb0cddeac57ce9e6b7 Mon Sep 17 00:00:00 2001
From: Yangshun Tay <tay.yang.shun@gmail.com>
Date: Wed, 18 Oct 2017 16:59:01 +0800
Subject: [PATCH] Add comments

---
 utilities/javascript/binToInt.js    | 1 +
 utilities/javascript/intToBin.js    | 1 +
 utilities/javascript/matrixClone.js | 1 +
 3 files changed, 3 insertions(+)

diff --git a/utilities/javascript/binToInt.js b/utilities/javascript/binToInt.js
index 82df52f6..c34a278d 100644
--- a/utilities/javascript/binToInt.js
+++ b/utilities/javascript/binToInt.js
@@ -1,3 +1,4 @@
+// Does not handle negative binary numbers.
 function binToInt(binary) {
     let res = 0;
     for (let i = 0; i < binary.length; i++) {
diff --git a/utilities/javascript/intToBin.js b/utilities/javascript/intToBin.js
index 663b084f..6d33e7e5 100644
--- a/utilities/javascript/intToBin.js
+++ b/utilities/javascript/intToBin.js
@@ -1,3 +1,4 @@
+// Does not handle negative numbers.
 function intToBin(number) {
     if (number === 0) {
         return '0';
diff --git a/utilities/javascript/matrixClone.js b/utilities/javascript/matrixClone.js
index cea7987e..b3f3f996 100644
--- a/utilities/javascript/matrixClone.js
+++ b/utilities/javascript/matrixClone.js
@@ -11,6 +11,7 @@ const a = [[1, 2], [1, 4]];
 console.log(deepEqual(matrixClone(a), [[1, 2], [1, 4]]));
 a[0][0] = 4;
 console.log(deepEqual(matrixClone(a), [[1, 2], [1, 4]]) === false);
+console.log(deepEqual(matrixClone([[1]]), [[1]]));
 
 // Test clone with default value.
 console.log(deepEqual(matrixClone([[1, 2], [1, 4]], 1), [[1, 1], [1, 1]]));