code: function isValueInList(list, value) {
      for (var i = list.length - 1; i >= 0; i--) {
          if (list[i] == value) {
              return true;
          }
      }
      return false;
  }
docs: Check if one value in list has the same value
  
  @param list Array of objects comparable to value
  @param value
  @return {boolean} True if exists or false if none exists in list