JS_Reverse_A_String

var str = "abc_def_ghj";
            var delimiter = '_';
            var temp = "";
            var result = "";

            for (i = str.length - 1; i >= 0; i--)
            {
                if (str[i] != delimiter)
                {
                    temp += str[i];
                }
                else
                {
                    var span = Reverse(temp);
                    span += delimiter;
                    result += span;
                    temp = "";
                }

                // If loop is over but temp still contains characters
                if(i == 0 && temp.length > 0)
                {
                    var span = Reverse(temp);
                    result += span;
                }
            }

            function Reverse(s){
                return s.split("").reverse().join("");
            }

            console.log(result);