React Hook “useState“ is called in function “xxx“ which is neither a React function component or 问题代码 import {useState,useEffect} from 'react'const useData= () =>{ const [data,setData]= useState({count:0});
Describe the bug While eslint run on my story fileI get this error: React Hook "useState" is called in function "render" that is neither a React function component nor a custom React Hook function. React component names must start with an uppercase letter. React Hook names must start with...
React Hook “useState“ is called in function “xxx“ which is neither a React function component or 问题代码 import {useState,useEffect} from 'react' const useData = () => { const [data,setData] = useState({count:0}); useEffect(()=>{ setTimeout(()=> { setData((data)=>({...da...
报错内容 ./src/Containers/device/add/index.tsxLine284:23:ReactHook"useState"is calledinfunction"newDeviceForm"which is neither aReactfunctioncomponent or a customReactHookfunctionreact-hooks/rules-of-hooksSearchforthe keywords to learn more about each error. 解决方案 把报错的组件改写为class或构造函数。
react-hook-useeffect-called-in-function.png 这里有个示例用来展示错误是如何发生的。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // App.js import React, {useEffect, useState} from 'react'; // 👇️ Not a component (lowercase first letter) // not a custom hook (doesn't start with...
import React, {useState} from 'react'; export default function App() { const [count, setCount] = useState(0); if (count > 0) { return Count is greater than 0; } // ⛔️ React Hook "useState" is called conditionally. //React Hooks must be called in the exact same order //...
useState是React中最基础的Hook，它允许我们在函数组件中添加状态。useState是React提供的一个内置Hook，...
我打破了 React Hook 必须按顺序、不能在条件语句中调用的枷锁 ssh-晨曦时梦见兮 【React】Hooks逐个解析 Ⅰ. useState在React函数组件中,是默认只有属性没有状态的,我们可以使用如下代码用useState读写变量和设定初始值 : const [n,setN] = react.useState(0) const [user,setUser] = react.u… KyraZheng打...
export default function Hooks(props) { //声明一个count变量的state,初始值为数字类型20 let [count, setCount] = useState(20); //声明一个msg变量的state,初始值为字符串的hello hook let [msg, setMsg] = useState('hello hook'); //声明一个list变量的state,初始值为数组类型 ...
export default function App() { const [count, setCount] = useState(0); if (count > 0) { return Count is greater than 0; } // ⛔️ React Hook "useState" is called conditionally. //React Hooks must be called in the exact same order // in every...