let apiResponse = fetch("https://fjolt.com/api");console.log(apiResponse); // Returns Promise<Pending>1.2.3.在fetch() 函数运行时,JavaScript并不会等待响应。如果我们想要访问响应,我们必须明确告诉 JavaScript 需要等待。等待fetch() 有两种方法: 可以在 then 循环中使用 then 并操作 fetch() 的响应。
这是因为设置 mode: 'no-cors' 实际上对浏览器说的是, “阻止我的前端 JavaScript 代码在任何情况下查看响应主体和标头的内容。” 在大多数情况下,这显然不是您想要的。 至于您 想 考虑使用 mode: 'no-cors' 的情况,请参阅 What limitations apply to opaque responses? 了解详情。它的要点是: In the ...
There was a time whenXMLHttpRequestwas used to make API requests. It didn’t include Promises, and it didn’t make for clean JavaScript code. Using jQuery, you could use the cleaner syntax ofjQuery.ajax(). Now, JavaScript has its own built-in way to make API requests. This is the F...
ES6 (JavaScript 2015) is supported in all modern browsers since June 2017: Chrome 51Edge 15Firefox 54Safari 10Opera 38 May 2016Apr 2017Jun 2017Sep 2016Jun 2016 fetch()is not supported in Internet Explorer. ❮ PreviousNext ❯ Track your progress - it's free!
代码语言:javascript 复制 fetch('https://example.com/data.json') .then(response => response.json()) .then(jsonData => { // 在这里进行音频处理,例如使用Web Audio API // ... }) .catch(error => { console.error('Error:', error); }); 在这个示例中,我们使用Fetch API发送GET请求获取名...
"permissions": [ "https://example.com/" ] 在扩展的JavaScript代码中,使用fetch函数发送请求。fetch函数是现代浏览器提供的用于发送网络请求的API。可以使用以下代码发送请求: 代码语言:javascript 复制 fetch('https://example.com/api', { method: 'GET', headers: { 'Content-Type': 'application/json', ...
fix: Uncaught (in promise) ❌ functionmaxRequest(url =``, times =3) {// 1. 闭包,保存私有属性functionautoRetry(url, times) {console.log('times = ', times); times--;// 2. fetch 本身返回值就是 Promise,不需要再次使用 Promise 包裹returnfetch(url).then(value=>{if(value.status===200...
JavaScript module to perform a fetch viahttps. The REST endpoint in the example does not require authentication - this was a conscious decision to keep it simple. Production applications are of course secured, but it's not hard to add OAuth2 or other authentication methods to the JavaScri...
Either use a test runner that can run in the browser, like Mocha, or use AVA with ky-universal. Read more. How do I use this without a bundler like Webpack? Make sure your code is running as a JavaScript module (ESM), for example by using a tag in your HTML document. Then Ky ...
Unfetch will account for the following properties in options:method: Indicates the request method to be performed on the target resource (The most common ones being GET, POST, PUT, PATCH, HEAD, OPTIONS or DELETE). headers: An Object containing additional information to be sent with the ...