convert rial to persian letters toman

rial-to-toman.js

 // include https://github.com/mahmoud-eskandari/NumToPersian
 get_persian(val) {
      // return "صفر تومان" if val is 0
      if(Number(val) === 0) return 'صفر تومان';

      // check value for change separated value to number
      let non_separated_val = isNaN(val) ? Number(val.split(',').join(''))  :val;

      // get "toman" part if number is bigger than 9 rial
      let toman_part = non_separated_val > 9 ? Num2persian(Math.floor(non_separated_val / 10)) + ' تومان ' : '';

      // get "rial" part if number  remainder of the division by 10 is bigger than 10
      let rial_part = non_separated_val % 10 > 0 ? Num2persian(non_separated_val % 10) + ' ریال ' : '';

      // return result by 2 statement ::
      // 1. statement one ::  toman_part and  rial_part exists
      // 2. statement two ::  toman_part exists or rial_part exists
      return  (toman_part && rial_part) ? (toman_part + ' و ' + rial_part) : toman_part ? toman_part : rial_part ;
  },