Web这种方法非常简单，非常适合简单、可预测且范围狭窄的用例，例如捕获失败的fetch请求。 但是如果你想捕捉一个组件中可能发生的所有错误，你将面临一些挑战和严格的限制。 限制1：你会在使用useEffect钩子时遇到困难 如果我们用try/catch包住useEffect，hook就失效了。 try { useEffect ( () => { throw new Error ('Hulk smash!'); }, []) } catch (e) { // useEffect …

fetching data with useState and useEffect in react.js

WebJun 7, 2024 · import React, { useState } from 'react'; function App() { const [data, setData] = useState( { hits: [] }); return ( WebMay 8, 2024 · loading, data,) (() (),,, data])) / (error) { // do some checking here to ensure data exist if (data) { // mutate data if you need to setState(data) } }, [data]) greetham rutland

Fetching Data With React Hooks and Fetch API [Beginners Guide]

WebFeb 9, 2024 · Fetching data Reading from local storage Registering and deregistering event listeners React’s effects are a completely different animal than the lifecycle methods of class-based components. The abstraction level differs, too. “I’ve found Hooks to be a very powerful abstraction — possibly a little too powerful. WebNov 11, 2024 · React Hooks are a powerful addition to React. Apart from useState and useEffect, React also provides you a way to create your own custom hooks. If you would … WebJul 9, 2024 · import React, {useState, useEffect} from "react" const App = () => { return Fetched data will be displayed here } The next step is to add a useState hook and to define the name of the state - in our case, that's data. Then, we define the function we’ll use later on to update the state - setData. greetham rutland lodges