Caesar's Cipher -- how to make my code work?

JavaScript
1

Hi guys,

So I came up with a lengthy solution to the Caesar’s Cipher challenge.

I’m aware the are better solutions, but I’m just trying to see if I can tweak it to make it work.

The main problem appears to be with the whitespace in the array. I’m not sure how to join “anotherArray” while also preserving the whitespace. Maybe it’s easier to “alert()” the last code rather than “return” to see it in action.

Thanks in advance!!

function rot13(str) { // LBH QVQ VG!
  var splitStr = str.split("");
  var newArray = [];
  var anotherArray = [];
  for(i = 0; i < splitStr.length; i++){
    if(splitStr[i].charCodeAt() === 32) {
	    newArray.push(" ");
    } else if (splitStr[i].charCodeAt() >= 78 && splitStr[i].charCodeAt() <= 90 ) {
			newArray.push(splitStr[i].charCodeAt() - 13);
    } else if(splitStr[i].charCodeAt()  <= 77 && splitStr[i].charCodeAt() >= 65) {
      newArray.push(splitStr[i].charCodeAt() + 13);
    }
    anotherArray.push(String.fromCharCode(newArray[i]));
  }
	return anotherArray.join("");
}

// Change the inputs below to test
rot13("GUR DHVPX OEBJA QBT WHZCRQ BIRE GUR YNML SBK.");
3

wow!! this worked after pushing the actual value rather than an empty string. And I changed the condition as well to check if “charCodeAt()” is below 65 or greater than 90.

Thanks so much for the explanation!

edit: I reworked the if statement, so that the above < 65 and > 90 falls under the “else” condition. Thank you