From 88e01f39576510ab0361337ea7f6b4f777efa08b Mon Sep 17 00:00:00 2001
From: chxtio <chxtio@gmail.com>
Date: Sat, 31 Oct 2020 23:08:29 -0700
Subject: [PATCH] Add caesars-cipher.js

---
 Javascript/caesars-cipher.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 Javascript/caesars-cipher.js

diff --git a/Javascript/caesars-cipher.js b/Javascript/caesars-cipher.js
new file mode 100644
index 0000000..9d651dc
--- /dev/null
+++ b/Javascript/caesars-cipher.js
@@ -0,0 +1,18 @@
+function rot13(str) {
+  var result = "";
+  const alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  const alphaShift = alphabet.substring(13) + alphabet.substring(0,13);
+
+  for (var char = 0; char < str.length; char++) {
+    if (alphabet.indexOf(str[char]) != -1) {
+      var getIndex = alphaShift.indexOf(str[char]);
+      result += alphabet[getIndex];
+    } else {
+      result += str[char];
+    }
+  }
+
+  return result;
+}
+
+rot13("SERR PBQR PNZC");
\ No newline at end of file