Caesars Cipher

caesars-cipher.markdown

Caesars Cipher

A Pen by Serhan on CodePen.

License.

script.js

function rot13(str) {
  var newArr=[];
  for (var i=0; i < str.length; i++) {
    var char = str.charCodeAt(i);
    if (char < 65 || char > 90) {
      newArr.push(str[i]);
    } else if (char < 78 ) {
      newArr.push(String.fromCharCode(char+13));
    } else {
      newArr.push(String.fromCharCode(char-13));
    }
  }

  return newArr.join('');
  
}

console.log(rot13("SERR PBQR PNZC"));