I am working with offset pagination in typescript react.
I have two states that contain pageNumber
and offset
. The default page is set to 1
and the default offset is set to 0
as you can see below.
useState
Hook
const [currentPage, setCurrentPage] = useState(1);
const [calculatedOffset, setCalculatedOffset] = useState(0);
On load, the component fetches pageNumber
and calculatedOffset
from the localStorage
and updates the defaults of the useState values.
useEffect
Hook
useEffect(() => {
if (typeof window !== "undefined") {
const integerPage = parseInt(localStorage.getItem("currentPage") || "1");
setCurrentPage(integerPage);
const integerOffset = parseInt(localStorage.getItem("calculatedOffset") || "0");
setCalculatedOffset(integerOffset);
}
}, []);
THE PROBLEM:
The problem I am facing is that whenever the component loads, it loads up with the values of the default state, ie pageNumber: 1, calculatedOffset: 0
for half a second then changes it to the updated state that was which was updated when the useEffect
hook ran. So on every load, the component flashes the data of the default state before ending up from the updated state fetched from localStorage.
Is there a way I can make it where the component only loads when the states have ended up on their final values and prevent the old states flashing for half a second behaviour every time the component loads?
useEffect
runs when the component has been rendered fully. So before that happens, useState
is already used to initialise the variables according to which your components are initially rendered.
To prevent the initial render according to the initialised value from useState
, set both to null
in useState
and in the component, render the elements conditionally:
{!currentPage || element}
or
{currentPage && element}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.