fetch-api

I'm trying to making a weather app that displays the weather and the temperature of many days of the week. I'm currently using openweathermap api for such task, the thing is that the information that I want (that is the date of the weather) only comes in xml format. Since I'm rebuilding it in ES6(ES2015) for academic reasons I wanted to also use the fetch api but since the fetch method parses it, it just delivers an error. so how can i fetch it or mby there is a better way to do it. let apis = { currentWeather: { //get user selected recomendation weather api:"http://api.openweathermap.org/data

As you can see from this Bugzilla thread (and also ), Firefox does not always send an Origin header in POST requests. The RFC states that it should not be sent in certain undefined "privacy-sensitive" contexts. Mozilla defines those contexts here . What I'd like to know is whether these are the only situations in which Firefox will not send the Origin header. As far as I can tell it also will not send it in cross-origin POST requests (though Chrome and IE will), but I can't confirm that in the documentation. Is it enumerated somewhere that I'm missing? As far as what the specs require, the

thanks for stopping by. I want to send a new FormData() as the body of a POST request using the fetch api the operation looks something like this var formData = new FormData() formData.append('myfile', file, 'someFileName.csv') fetch('https://api.myapp.com', { method: 'POST', headers: { "Content-Type": "multipart/form-data" }, body: formData } ) the problem here is that the boundary, something like boundary=----WebKitFormBoundaryyEmKNDsBKjB7QEqu never makes it into the Content-Type: header it should look like this Content-Type:multipart/form-data; boundary=---

I'm trying to access the Deezer API from localhost, but I'm keep getting the following error: Fetch API cannot load http://api.deezer.com/search/track/autocomplete?limit=1&q=eminem. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost' is therefore not allowed access. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled. localhost's response's headers does have Access-Control-Allow-Origin header (Access-Control-Allow

with fetch('somefile.json') , it is possible to request that the file be fetched from the server and not from the browser cache? in other words, with fetch() , is it possible to circumvent the browser's cache? Fetch can take an init object containing many custom settings that you might want to apply to the request, this includes an option called "headers". The "headers" option takes a Header object. This object allows you to configure the headers you want to add to your request. By adding pragma: no-cache and a cache-control: no-cache to your header you will force the browser to check the

I am trying to make a cors PUT request using the vanilla Fetch API When I click my button to send the PUT request, the method on the first request is OPTIONS . It is only when I click the button again, then the method on the request changes to PUT . Why? I understand this is part of the CORS preflight, but is there a way to trigger the preflight manually so the OPTIONS response can be cached? Could this behavior be indicative of a failing promise somewhere? guest271314 See the Fetch Standard , section 4.7. CORS-preflight fetch . Note : This is effectively the user agent implementation of the