CommonFun.GetAtkAttrByArrow

function CommonFun.GetAtkAttrByArrow(itemid)
  if CommonFun.ArrowAttr == nil then
    return 0
  end
  for key, val in pairs(CommonFun.ArrowAttr) do
    if val[1] == itemid then
      return val[2]
    end
  end
  return 0
end