I’m using JavaScript Fetch to get Data from OpenWeather Api. I have a form for users to input the City whose weather information they want to see. For some reason, the data from the previous city still pops up in the HTML page instead of disappearing for the new data to take its place. How do I clear th…
Tag: fetch
Can’t perform a React state update on an unmounted component with fetch POST method
I get this warning when i use my fetch post method how can I cancel all subscriptions and asynchronous tasks in a useEffect cleanup function.With my Post methods. Warning: Can’t perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. T…
Protocol version from JavaScript Fetch responses
I was just playing with Fetch and noticed it seemed impossible to get the protocol version from the response start line. During an HTTP request the first line of a response could look like this: HTTP/1.1 404 Not Found Basically, I am looking for a way to get the HTTP/1.1 part of the first line. I was able to …
Values are null when POSTing to Razor Handler via JavaScript fetch()
I’m trying to POST email content to a Razor Handler, but the request values don’t seem to be properly binding. I’ve been scouring all I can (including many questions on SO) for answers without luck. The code sends the data properly as best I can tell from the Network tab. My breakpoint in th…
syntax error only on first load, after refresh page then will be gone
I got this error: “Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0” whenever I clear browsing data and refresh page to load my API, but it only shows in the first load, then will be gone after refresh again. looks it beacuse of cookies or somethings, is there anybody…
failed to load wasm application
I’m trying to host a website, and I use a .wasm file with .js scripts created by the wasm-pack tool. I tested the project locally with npm and node.js and everything worked fine. But Then I hosted it on a raspberry (apache2), and when I try to access it, I get in the following error: Failed to load modu…
nextjs api not working when fetching through isomorphic-unfetch
Im not getting my data (notes) inside the props, it is giving undefined when im using console.log(notes). My backend api is also in the same project in /pages/api/notes/index.js The api which im calling is ‘http://localhost:3000/api/notes’ Even my api is working fine when im testing it on postman.…
Can’t make new fetch request after aborting previous
I need to change a parameters that defines what data should come from my requests, also this application needs to refresh on a regular time interval. If the user changes the parameter in the middle of an unfinished request things start to behave strange and some unexpected behavior occurs. So my approach was …
javascript async fetch function
I am trying to create a recursive function that sends a PUT request for every integer of a given array, and call another function at the end of it. But it seems that it calls the load_mailbox() function before fetching the last item of the array. I know that this should be better implemented using async / awa…
/Reactjs fetching bringing a 405 status code in browser
I am developing a react app over DHIS2 and data online that is structured like: I am trying to update the whole attributeValues Node. I’m using a fetch request, but getting 405 method not allowed What do you suppose i’m doing wrong. This is the fetch post request i wrote. If the question happens t…