First, please look at the code.
const [currentUserPK, setCurrentUserPK] = useState(undefined); const [currentPage, setCurrentPage] = useState(1); const [rowsPerPage, setRowsPerPage] = useState(10);
//현재 USER_PK 가져오는 API const getCurrentUserPk = async () => { const url = '/api/account/decoding-token'; const res = await get(url) .then((res) => { console.log(res); setCurrentUserPK(res.data.USER_PK); }) .catch((error) => { console.log(error); }); }; useEffect(() => { getCurrentUserPk() },[]);
//생성된 액션 아이템 불러오기 API const getActionItems = async () => { const url = `/api/work/view-items`; const params = { id: currentUserPK, currentPage: currentPage, feedsPerPage: rowsPerPage, }; await get(url, { params: params }).then((res) => { setActionItemArray(res.items); console.log(res.items); console.log(actionItemArray); }); }; useEffect(() => { getActionItems(); }, [currentPage, rowsPerPage, actionItemArray]);
The problem happens with this following code.
useEffect(() => { getActionItems(); }, [currentPage, rowsPerPage, actionItemArray]);
When I add actionItemArray in the second argument array, It keeps looping
console.log(res.items); console.log(actionItemArray);
these two console.log events.
When I delete actionItemArray from the second argument of useEffect Hook, I have to refresh my page to added, deleted and edited actionItems.
I have no idea why it happens. Please help!
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Answer
“dependencies” (second argument) of the useEffect
means the values change should trigger “the effect” (first argument)
Inside effect, you change the actionItemArray
, which is also passed into dependencies.