importReact,{useState,useEffect}from'react';importaxiosfrom'axios';functionApp(){const[data,setData]=useState({hits:[]});useEffect(()=>{constfetchData=async()=>{constresult=awaitaxios('https://hn.algolia.com/api/v1/search?query=redux',);setData(result.data);};fetchData();},[]);return...
Fetching data from third-party RESTful APIs in React application is a common task when creating web application. This task can be solved easily by using the standard JavaScript Fetch API in your React application. The Fetch API is a new standard to make server requests with Promises, but which...
In this article, I am going to show you how to create a React app that will fetch data from an API. Fetching data from an API is central to almost every application. I will show you how easy it is to fetch data from an API. What We Will Be Creating We will create a React app ...
import{useQuery}from'@tanstack/react-query';constfetchTodos=async():Promise<Todo[]>=>{constresponse=awaitfetch('api/tasks');if(!response.ok){thrownewResponseError('Failed to fetch todos',response);}returnawaitresponse.json();};exportconstuseTodos=():UseTodos=>{const{data:todos=[],isLoadin...
Let’s create a simple example using the useQuery hook. We’re going to use the Chuck Norris API for fetching a random chuck joke. We’re going to installAxiosto use it as our promise-based function to fetch our data. yarn add axios ...
React Query 通常被描述为 React 缺少的数据获取(data-fetching)库,但是从更广泛的角度来看,它使 React 程序中的获取,缓存,同步和更新服务器状态变得更加轻松。 通过使用 React Query,能够将服务端状态从客户端状态库中剥离出来,简化 redux、zustand 等库所写的逻辑,将臃肿的服务端状态变得更加简单,也是当下最流行...
useEffect可以告诉 React 组件需要在挂载完成、更新完成、卸载前执行某些操作。它跟 class 组件中的componentDidMount、componentDidUpdate 和 componentWillUnmount 具有相同的用途，只不过被合并成了一个 API。它的常见用途有下面几种。获取数据（data fetching）事件监听或订阅（setting up a subscription）改变 DOM（...
获取数据(data fetching) 事件监听或订阅(setting up a subscription) 改变DOM(changing the DOM) 输出日志(logging) 下面是从远程服务器获取数据的例子。(查看运行结果) importReact,{useState,useEffect}from'react';importaxiosfrom'axios';functionApp(){const[data,setData]=useState({hits:[]});useEffect(()=...
data:此属性包含查询函数的结果。请注意数据也可能为 undefined;这是因为在第一次调用时,当请求处于等待状态时,data 尚未呈现。 isLoading:这个标志表示 React Query 正在加载数据。还有一个 isFetching 标志,如果你正在创建无限滚动,则很重要。isFetching 标志表示有一个挂起的请求,如果应用程序请求下一个信息,这是...
fetch('https://api.example.com/data') .then(response => response.json()) .then(newData => { setData(newData); // 这里可以添加逻辑来处理新数据,例如更新UI或触发其他操作 }) .catch(error => { console.error('Error fetching data:', error); ...