fetch-api

I am trying out the new Fetch API but is having trouble with Cookies. Specifically, after a successful login, there is a Cookie header in future requests, but Fetch seems to ignore that headers, and all my requests made with Fetch is unauthorized. Is it because Fetch is still not ready or Fetch does not work with Cookies? I build my app with Webpack. I also use Fetch in React Native, which does not have the same issue. Khanetor Fetch does not use cookie by default. To enable cookie, do this: fetch(url, { credentials: "same-origin" }).then(...).catch(...); In addition to @Khanetor's answer, for

I have a fetch-api POST request: fetch(url, { method: 'POST', body: formData, credentials: 'include' }) I want to know what is the default timeout for this? and how can we set it to a particular value like 3 seconds or indefinite seconds? Bruce Lee It doesn't have a specified default; the specification doesn't discuss timeouts at all. You can implement your own timeout wrapper for promises in general: // Rough implementation. Untested. function timeout(ms, promise) { return new Promise(function(resolve, reject) { setTimeout(function() { reject(new Error("timeout")) }, ms) promise.then(resolve,

There is a new API for making requests from JavaScript: fetch(). Is there any built in mechanism for canceling these requests in-flight? SudoPlz TL/DR: fetch now supports a signal parameter as of 20 September 2017, but not all browsers seem support this atm . This is a change we will be seeing very soon though, and so you should be able to cancel a request by using an AbortController s AbortSignal . Long Version How to: The way it works is this: Step 1 : You create an AbortController (For now I just used this ) const controller = new AbortController() Step 2 : You get the AbortController s

Opaque responses are defined as part of the Fetch API , and represent the result of a request made to a remote origin when CORS is not enabled. What practical limitations and "gotchas" exist around how opaque responses can be used, both from JavaScript and as resources on a page? Access to Opaque Responses' Headers / Body The most straightforward limitation around opaque responses is that you cannot get meaningful information back from most of the properties of the Response class, like headers , or call the various methods that make up the Body interface, like json() or text() . This is in