请看下面的代码,由于某种原因,它抛出了"Logout is not a function“: logout.jsx: import React from 'react';
import { Link } from 'react-router-dom';
class Logout extends React.Component {
componentDidMount = () => {
this.props.onLogoutUser();
}
render() {
return (
<
React抱怨下面的代码,说它的useEffect被有条件地调用了: import React, { useEffect } from "react";
import ReactDOM from "react-dom";
function App() {
const documentCounts = {};
const invertedIndexes = {};
for (const term of []) {
if (!invertedIndexes[term]) continue;
// The offending code
我是React的新手,我正在尝试将React钩子集成到我遵循的React课程使用的一些项目中。此示例应添加一个输入字段,用于设置页面的背景颜色。当我加载页面时,在1秒后,我得到以下错误 src\App.js
Line 16:43: React Hook "useBackgroundColor" cannot be called inside a callback. React Hooks must be called in a React function component or a custom React Hook function react-hook
我收到了关于React has detected a change in the order of Hooks called by Checkout的警告
我确实读过,看起来我的代码满足了要求
警告:
带有钩子的文件片段:
if (!token) {
navigate.push(routes.login)
return <Text>Redirect</Text>
}
const maximumDate = moment().add(1, 'year')
const minimumDate = moment()
con
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
我正在尝试使用rc-time-picker,但我得到了以下错误请检查下面的错误,我得到了什么Align.js:88 Uncaught TypeError: react__WEBPACK_IMPORTED_MODULE_0___default.a.useRef is not a function at Align (Align.js:88) at updateForwardRef (react-dom.development.js:13581) at beginWork (react-dom.development.js:14402) at p
下面的代码片段有什么区别?
// calling a function
function execute(){
}
function fn(){
asynchronousFunction(function(){
execute();
})
}
fn();
下面的代码片段与上面的不同之处
// callback a function
function execute(){
}
function fn(done){
asynchronousFunction(function(){
done();
})
}
fn(execute);
回调与直接调用
我点击了下面的链接并尝试做一个poc
在搜索栏中,我创建了一个文本框,我正在获取值,但在index.js中,当我给出componentWillRecieveProps并打印值以将其传递给api时,不打印任何内容。你能告诉我如何修复it.Providing更新后的代码沙箱和下面的代码片段吗?
//import React from "react";
import ReactDOM from "react-dom";
import React, { Fragment, useState, Component } from "react";
im