The Fetch API Exception Handling is ErraticThe Promise object returned by fetch() doesn't reject an error when an HTTP error status is returned (400 or greater) like most normal APIs do. For example, 400 and 500
这与发送的请求类似,只是该模式不能访问响应的内容信息;但是它可以被其他APIs进行处理,例如ServiceWorker。另外,该模式返回的repsonse可以在Cache API中被存储起来以便后续的对它的使用,这点对script、css和图片的CDN资源是非常合适的,因为这些资源响应头中都没有CORS头。 总的来说,fetch的跨域请求是使用CORS方式,需要...
const{fetch: originalFetch } =window;window.fetch=async(...args) => {let[resource, config] = args;letresponse =awaitoriginalFetch(resource, config);if(!response.ok&& response.status===404) {// 404 error handlingreturnPromise.reject(response); }returnresponse; };fetch('https://jsonplaceholde...
Wrapping the fetch function into atry/catchblock will catchallexceptions, such as errors originating from node core libraries, like network errors, and operational errors which are instances of FetchError. See theerror handling documentfor more details. importfetchfrom'node-fetch';try{awaitfetch('ht...
根据github上timeout handling上的讨论,目前可以有两种不同的解决方法: 方法一:单纯setTimeout方式 varoldFetchfn=fetch;//拦截原始的fetch方法window.fetch=function(input,opts){//定义新的fetch方法,封装原有的fetch方法returnnewPromise(function(resolve,reject){vartimeoutId=setTimeout(function(){reject(newErr...
Error Handling No matter what you're trying to accomplish with the Fetch API, it's essential to have a good error-handling strategy. This is especially true for POST requests, which often require sensitive data. The simplest way to handle errors is with a try/catch block. You can wrap yo...
根据github上timeout handling上的讨论,目前可以有两种不同的解决方法: 方法一:单纯setTimeout方式 varoldFetchfn = fetch;//拦截原始的fetch方法window.fetch=function(input, opts) {//定义新的fetch方法,封装原有的fetch方法returnnewPromise(function(resolve, reject) {vartimeoutId =setTimeout(function() {...
const{users}=awaitofetch("/api/users",{method:"POST",body:{some:"json"},}); ✔️ Handling Errors ofetchAutomatically throws errors whenresponse.okisfalsewith a friendly error message and compact stack (hiding internals). A parsed error body is available witherror.data. You may also use...
“应用程序编程接口”(API) (opens new window) 用作中间件,可以提供数据以供外部软件产品(在网站或应用程序中)使用让我们从基础 fetch 使用开始:fetch(URL); 这就是您获取 URL 的方法. 您需要将 替换为 URL 实际的 URL 字符串。这里的 URL 就是您获取数据的 应用程序编程接口(API)比如您现在想随机获取...
Quiz: What does this call to the web’s new fetch() API do? fetch("http://httpstat.us/500") .then(function() { console.log("ok"); }).catch(function() { console.log("error"); }); If you’re like me, you might assume this code logs “error” when run—but it actually ...