asyncfunctionfetchData(){try{constresponse =awaitfetch('https://api.example.com/data');if(!response.ok) {thrownewError(`HTTP error! status:${response.status}`); }constdata =awaitresponse.json();console.log(data); }catch(error) {console.error('获取数据失败:', error); } } fetchData();...
这与发送的请求类似,只是该模式不能访问响应的内容信息;但是它可以被其他APIs进行处理,例如ServiceWorker。另外,该模式返回的repsonse可以在Cache API中被存储起来以便后续的对它的使用,这点对script、css和图片的CDN资源是非常合适的,因为这些资源响应头中都没有CORS头。 总的来说,fetch的跨域请求是使用CORS方式,需要...
const{fetch: originalFetch } =window;window.fetch=async(...args) => {let[resource, config] = args;letresponse =awaitoriginalFetch(resource, config);if(!response.ok&& response.status===404) {// 404 error handlingreturnPromise.reject(response); }returnresponse; };fetch('https://jsonplaceholde...
根据github上timeout handling上的讨论,目前可以有两种不同的解决方法: 方法一:单纯setTimeout方式 varoldFetchfn=fetch;//拦截原始的fetch方法window.fetch=function(input,opts){//定义新的fetch方法,封装原有的fetch方法returnnewPromise(function(resolve,reject){vartimeoutId=setTimeout(function(){reject(newErr...
Error Handling No matter what you're trying to accomplish with the Fetch API, it's essential to have a good error-handling strategy. This is especially true for POST requests, which often require sensitive data. The simplest way to handle errors is with a try/catch block. You can wrap yo...
根据github上timeout handling上的讨论,目前可以有两种不同的解决方法: 方法一:单纯setTimeout方式 varoldFetchfn=fetch;//拦截原始的fetch方法window.fetch=function(input,opts){//定义新的fetch方法,封装原有的fetch方法returnnewPromise(function(resolve,reject){vartimeoutId=setTimeout(function(){reject(newErr...
根据github上timeout handling上的讨论,目前可以有两种不同的解决方法: 方法一:单纯setTimeout方式 varoldFetchfn = fetch;//拦截原始的fetch方法window.fetch=function(input, opts) {//定义新的fetch方法,封装原有的fetch方法returnnewPromise(function(resolve, reject) {vartimeoutId =setTimeout(function() {...
Handling client and server errors It is common to create a helper function to check that the response contains no client (4xx) or server (5xx) error responses: importfetchfrom'node-fetch';classHTTPResponseErrorextendsError{constructor(response){super(`HTTP Error Response:${response.status}${respo...
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...
如果我们使用Fetch API,我们必须手动调用JSON.stringify()来字符串化对象。然后将其赋值到请求对象的data属性上。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 const url = "<https://jsonplaceholder.typicode.com/todos>"; const todo = { title: "A new todo", completed: false }; fetch(url, {...