The fetch logic may be needed in other components as well, so we will extract that into a custom Hook.Move the fetch logic to a new file to be used as a custom Hook:Example: useFetch.js: import { useState, useEffect } from "react"; const useFetch = (url) => { const [data, ...
React useState Hook 允许我们跟踪函数组件中的状态。状态通常是指数据或属性…… www.w3schools.com ](https://www.w3schools.com/react/react_usestate.asp) [ 使用状态钩子 - React Hooks 是 React 16.8 中的新增功能。它们让您无需编写类即可使用状态和其他 React 特性。这… reactjs.org ](https://react...
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Example:Get your own React.js Server Here is an example of a Hook. Don't worry if it doesn't make sense. We will go into more detail in the next section. import React, { useState } from "react"; import ReactDOM from "react-dom/client"; function FavoriteColor() { const [color, ...
renderTriggeredhappens when there is a change in a tracked reactive component, so that a new render is triggered activatedhappens when a cached dynamic component is added (but is already in the DOM) deactivatedhappens when a cached dynamic component is removed (but not from the DOM) ...