title: How do I push letters to into a string?
body: <p>I want to take the var ascii and put it into a string. The code only returns each char within the loop.</p>
  
  <pre><code>    function rot13(str) { // LBH QVQ VG!
          var newStr = str;
          for (var i = 0; i &lt; str.length; i++){
              var letter = str.charAt(i);
              var code = letter.charCodeAt();
  
              if (code &gt; 77){
                  ascii = code - 13;
              }
              else if (code === 32 ){
                  ascii = code;
              }
              else{
                  var ascii = code + 13;
              }
          }
      }
  
      rot13("SERR PBQR PNZC"); //returns FREE CODE CAMP
  </code></pre>