Typescript 无需刷新即可让现场访客逆变

我的客户想制作总访客柜台.

当用户不刷新页面时，是否有可能使总访客计数增加？因此用户无需刷新页面即可看到访问者总数的增加.我应该添加什么才能实现这一目标？请详细解释一下，因为我是Typescript 新手.

这是我的代码

type visitortype={
  count: number;
}


const Footer = () => {
  const [visitor, setvisitor] = useState<visitortype>();

  useEffect(() => {
    fetch('https://count.cab/hit/ghG6Oirn0b')
    .then(response => response.json())
    .then(allvisitor=>  setvisitor(allvisitor))
    .catch(error => console.log(error));
  }, []);

 return (
    <GridItem
      w="100%"
      h={{ base: "80px", lg: "300px" }}
      colSpan={{ base: 8, lg: 4 }}
    >
      <VStack
        align={{ base: "center", lg: "stretch" }}
        marginTop={{ base: "0", lg: "60px" }}
        marginLeft={{ base: "0", lg: "50px" }}
      >
        <Box w={{ base: "100px", lg: "220px" }} paddingBottom={"10px"}>
          <Image src={imgLogoMd} alt="Logo" w="100%" />
          <HStack>
            <Text fontSize={{ base: "xs", lg: "md" }} textAlign={"justify"}>
              {visitor?.count} Visitor
            </Text>
          </HStack>
        </Box>
      </VStack>
    </GridItem>
  );

};