text: 
  
  /*
   * Complete the isPositive function.
   * If 'a' is positive, return "YES".
   * If 'a' is 0, throw an Error with the message "Zero Error"
   * If 'a' is negative, throw an Error with the message "Negative Error"
   */
  function isPositive(a) {
  if(a > 0){
          return 'YES';
      }
      else if(a == 0){
          throw new Error('Zero Error');
      }
      else{
          throw new Error("Negative Error");
      }
  }
  
  