问使用React表单的useQuery (从React查询)抛出无效的Hook调用ENReact Query 是什么？React Query 是由@...
importReact,{useState}from"react";importconstatefrom"constate";// custom hookfunctionuseCounter(){const[count,setCount]=useState(0);constincrement=()=>setCount(prevCount=>prevCount+1);return{count,increment};}// hook passed in constateconst[CounterProvider,useCounterContext]=constate(useCounter);f...
发生该错误的原因是React Hooks(例如useQuery)无法在循环或回调函数内调用。必须在 React 函数组件或自定义 React Hook 的顶层调用 Hook,以确保在每次渲染时以相同的顺序调用它们。 要解决此问题,您应该将 useQuery 调用移到循环之外。您可以按顺序调用它们或创建管理多个查询的自定义挂钩,而不是在映射函数内进行多个...
的数据填充 React hook 表单: // TS const currentUserId = '1'; const { data: currentPerson, } = useQuery({ queryKey: ['person', currentUserId], queryFn: ({ queryKey }) => { const [, id] = queryKey; return fetchPerson(id); }, }); const form = useForm<z.infer<typeof for...
The query key to use for this query. The query key will be hashed into a stable hash. See Query Keys for more information. The query will automatically update when this key changes (as long as enabled is not set to false). queryFn: (context: QueryFunctionContext) => Promise<TData> ...
function App() { const len = 3000; return ( {Array(len) .fill(0) .map((_, i) => ( {i} ))} ); } const rootEl = document.querySelector("#root"); ReactDOM.render(<App />, rootEl); 主流浏览器刷新频率为 60Hz,即每(1000ms / 60Hz)16.6ms 浏览器刷新一次。我们知道,JS 可...
如果你只是想通过使用Hook来获取数据,可以通过npm install use-data-api,并配合文档use-data-api文档来使用,如果有帮助的话请➕星; Note: In the future, React Hooks are not be intended for data fetching in React. Instead, a feature called Suspense will be in charge for it. The following walkthr...
reactjs react-native state hook use-state 我正在从Firebase获取数据,并希望更新state: const [allProfile, setAllProfile] = useState([]); ... const displayProfileList = async () => { try { await profile .get() .then(querySnapshot => { querySnapshot.docs.map(doc => { const documentId ...
useLayoutEffect的使用场景为:有一个中间状态希望隐藏的时候再使用。 大部分情况下useEffect可以适用于99%的场景。 useEffect的错误事例。看看有没有你 function SearchResults() { const [query, setQuery] = useState('react'); // Imagine this function is also long function getFetchUrl() { return 'https...
3、性能优化相关:useMemo、useCallback 4、DOM 相关:useRef 5、redux 相关:useSelector、useDispatch、useStore 6、用户自定义 hook 或者是 某些库自带的 hook等 useState 在函数组件保存数据的主要方法,等同于类组件的 this.state 与 this.setState functionTest(){const[count,setCount]=React.useState(0)constch...