Algorithm

CaesarCode.js

function solution(s,n){
    var answer = "";
    var check = "";
    for(var i = 0; i < s.length; i++){
        check = s.charCodeAt(i);
        if(check == 32){
            answer += " ";
        }
        else if (check >= 65 && check <= 90){
            if(check + n > 90){
                answer += String.fromCharCode(check + n - 26);
            }else{
                answer += String.fromCharCode(check + n);
            }
        }
        else if(check >= 97 && check <= 122){
            if(check + n > 122){
                answer += String.fromCharCode(check + n - 26);
            }else{
                answer += String.fromCharCode(check + n);
            }
        }
    }
    return answer;
}