如果我们使用 await,可以在函数或代码的任何地方使用它来获取 API 的响应,并在其上使用任何响应函数,例如 text() 或 json()。 例如:复制 // Typically we wrap await in an async function// But most modern browsers and Node.JS support// await statements outside of async functions now.async getAPI(...
constformData=newFormData();formData.append('username','john_doe');formData.append('password','123456');fetch('https://example.com/login',{method:'POST',body:formData}).then(response=>response.json()).then(data=>console.log(data)).catch(error=>console.error(error))...
JavaScript Fetch API ❮ PreviousNext ❯ Examples fetch(file) .then(x => x.text()) .then(y => myDisplay(y)); Try it Yourself » Fetch is based on async and await. The example might be easier to understand like this: asyncfunctiongetText(file) {...
Now, JavaScript has its own built-in way to make API requests. This is the Fetch API, a new standard to make server requests with Promises, but which also includes additional features. Prerequisites A local development environment for Node.js. FollowHow to Install Node.js and Create a Local...
接收来自 https://example.com 的响应。 将Access-Control-Allow-Origin 标头添加到响应中。 将该响应和添加的标头传递回请求的前端代码。 然后浏览器允许前端代码访问响应,因为带有 Access-Control-Allow-Origin 响应头的响应是浏览器看到的。 即使请求是触发浏览器执行 CORS 预检 OPTIONS 请求的请求,这也有效,因为...
json()) .then(data => { // 处理响应数据 }) .catch(error => { // 处理错误 }); 在上述代码中,我们使用fetch函数发送GET请求到"https://example.com/api"。在headers中,我们设置了'Content-Type'为'application/json',并且将'Origin'设置为null,以发送null原始头。相关搜索:...
import{fetch,CookieJar}from"node-fetch-cookies";(async()=>{constcookieJar=newCookieJar();// log in to some apiletresponse=awaitfetch(cookieJar,"https://example.com/api/login",{method:"POST",body:"credentials"});// do some requests you require login forresponse=awaitfetch(cookieJar,"http...
Example: Retry custom behavior TheretryOnoption may also be specified as a function, in which case it will be supplied three arguments:attempt(starting at 0),error(in case of a network error), andresponse. Return a truthy value from this function in order to trigger a retry, any falsy va...
The "Node.js way" is to use streams when possible. You can pipe res.body to another stream. This example uses stream.pipeline to attach stream error handlers and wait for the download to complete. import {createWriteStream} from 'node:fs'; import {pipeline} from 'node:stream'; import ...
*@augments*@example*@link*@solutions* *@best_solutions* */constlog =console.log;constautoRefetch= (url =``, times =3) => {constpromise =fetch(url); promise.then((res) =>{// return res.json();Promise.resolve(res.json());