When rendering and testing a component with auseEffectthat calls an async function that modifies the component's state, then anact()console error will be output when running tests. @testing-library/reactversion:
useEffect(() => { // Create an scoped async function in the hook // 注意如果函数没有使用组件内的任何值,可以把它提到组件外面去定义 // 下面代码可以提到外面,可以自由地在 effect 中使用,下面就不改啦 async function asyncFunction() { await requestData(); setData(data) } // Execute the creat...
正确使用 async 函数和 useEffect 是一个常见的问题,因为在 useEffect 中直接使用 async 函数会导致一些问题。这是因为 useEffect 函数本身不能直接返回 Promise。下面是一种正确使用 async 函数和 useEffect 的方法: 代码语言:txt 复制 import React, { useEffect } from 'react'; function MyComponent() { useEffe...
···useEffect(()=>{letisSubscribed=true;// declare the async data fetching functionconstfetchData=async()=>{// get the data from the apiconstdata=awaitfetch(`https://yourapi.com?param=${param}`);// convert the data to jsonconstjson=awaitresponse.json();// set state with the result...
useEffect(() => { (async function fn() { const response = await selectReceiveMaterialRecord({ billDetailId: billDetailId, }); form.setFieldsValue({ materielId: response.data?.materialName }); setMaterielId(response.data?.materialId); ...
// Imagine this function is also long async function fetchData() { const result = await axios(getFetchUrl()); setData(result.data); } useEffect(() => { fetchData(); }, []); // ... } 然后我们在某些函数内使用了某些state或者prop: ...
{letid;constcontroller=newAbortController();asyncfunctiongetList(){try{constdata=awaitfetchDataWithAbort({fetchData,signal:controller.signal});setList(list=>list.concat(data));id=setTimeout(getList,2000);}catch(e){console.error(e);}}getList();return()=>{clearTimeout(id);controller.abort();}...
Put the async function inside: async function fetchData() { useEffect(async () => {接下来是这样的 浏览2提问于2022-05-06得票数 1 1回答 异步redux分派会导致内存泄漏。 、、 我如何解决这个问题? } }, []); fetchData(); }, [fetchData]); 浏览5提问于2020-07-29得票数 0 2回答 在useEffe...
}elseif(typeofdestroy.then==='function') { addendum ='\n\nIt looks like you wrote useEffect(async () => ...) or returned a Promise. '+'Instead, write the async function inside your effect '+'and call it immediately:\n\n'+'useEffect(() => {\n'+' async function fetchData() ...
function useFetchDataInterval(fetchData) { const [list, setList] = useState([]); useEffect(() => { let id; const controller = new AbortController(); async function getList() { try { const data = await fetchDataWithAbort({ fetchData, signal: controller.signal }); ...