我不确定在我的React Native应用程序中应该以哪种方式导入React。如果我需要使用像useState这样的钩子,我应该用import React, { useState } from 'react';、import { useState } from 'react';、import * as React from 'react';还是import * from 'react';来导入React?如果我不需要任何钩子,我应该使用:import React from 'react';、import '
我在使用usestate()钩子进行状态操作后遇到问题。
无法编译错误:
./src/App.js
Line 6:43: React Hook "useState" is called in function "app" which is neither a React function component or a custom React Hook function react-hooks/rules-of-hooks
Line 14:39: React Hook "useState" is called in functio
我试图使用useMediaQuery来响应javascript媒体查询,但是我无法让它工作,我得到:-
错误消息:"useState" cannot be called inside a callback. React Hooks must be called in a React function component or a custom React Hook function
游乐场
我想这是media-query.ts第4行的错误
import { useState, useEffect } from 'react'
const useMediaQue
错误:
React Hook "useState" is called in function "createFlight" that is
neither a React function component nor a custom React Hook function.
React component names must start with an uppercase letter react-
hooks/rules-of-hooks
我的代码:
import React, {Component} from 'react'
我正在尝试基于这篇文章创建一个组件: https://scotch.io/tutorials/5-ways-to-convert-react-class-components-to-functional-components-w-react-hooks#toc-class-with-state-and-componentdidmount 但是简单地从上面的链接复制粘贴功能组件会抛出一个错误: TypeError: Object(...) is not a function
Home
src/components/Home.js:3
1 | import React, { useState
我想将存储在const mappedData中的数据从FetchDataComponent.js传递给ReactSelectComponent.js。有什么方法可以用功能组件做到这一点吗?在下面的代码中我得到了Error: Objects are not valid as a React child
FetchDataComponent.js
import React,{useState, useEffect} from "react";
import axios from "axios";
import _ from "lodash";
co
我目前正在用react编写代码,我需要从我的API中获取一些数据。我想使用钩子存储接收到的数据。然而,当我调用钩子"setLoading(false)“,这个钩子用于用实际数据替换临时微调函数时,我得到了一个”无效钩子异常“。 import React, { useEffect, useState } from 'react';
import { Spin } from 'antd';
import { SwitchTable } from '../components/SwitchTable';
export function Ou
给定以下组件,当我按下年龄选择器并将值更改为15时,使我呈现一个没有“驾驶执照”字段的表单时,就会得到错误:
Uncaught Error: Rendered fewer hooks than expected. This may be caused by an accidental early return statement.
at invariant (react-dom.development.js:55)
at finishHooks (react-dom.development.js:11581)
at updateFunctionComponent (re