fetch

问题 I'm executing a photo upload using the fetch API and I keep receiving Type Error Network Request Error . I receive the same error on the emulator and a device. I'm using react-native-image-crop-picker as the source for the photo upload data. Any thoughts? const handlePhotoUpload = async (image: any, token: string) => { const { path, filename, mime } = image; const uri = path.replace("file://", "") const file = { uri, type: mime, name: filename }; const body = new FormData() body.append('file'

问题 I'm executing a photo upload using the fetch API and I keep receiving Type Error Network Request Error . I receive the same error on the emulator and a device. I'm using react-native-image-crop-picker as the source for the photo upload data. Any thoughts? const handlePhotoUpload = async (image: any, token: string) => { const { path, filename, mime } = image; const uri = path.replace("file://", "") const file = { uri, type: mime, name: filename }; const body = new FormData() body.append('file'

问题 I am trying to upload a document / image file to server. I tried using fetch (multipart), as well as XMLHttpRequest. The same thing is working fine with Postman . 1) using fetch multipart ---- getting network request failed export async function upload(url, res, uploadedFileName) { var data = { file1: { uri: res.uri, type: res.type, name: uploadedFileName, } }; let options = { headers: { 'Content-Type': 'multipart/form-data' }, method: 'POST' }; options.body = new FormData(); for (let key in

问题 Tried using https://www.npmjs.com/package/abortcontroller-polyfill?activeTab=readme to use this controller on IE. But it does not work 回答1: To get window.AbortController() running in IE11, take a look at their IE11 example. Install: promise-polyfill unfetch abortcontroller-polyfill Add the following to your work before AbortController is called. import 'promise-polyfill/src/polyfill'; import 'unfetch/polyfill'; import 'abortcontroller-polyfill'; 来源： https://stackoverflow.com/questions

问题 Tried using https://www.npmjs.com/package/abortcontroller-polyfill?activeTab=readme to use this controller on IE. But it does not work 回答1: To get window.AbortController() running in IE11, take a look at their IE11 example. Install: promise-polyfill unfetch abortcontroller-polyfill Add the following to your work before AbortController is called. import 'promise-polyfill/src/polyfill'; import 'unfetch/polyfill'; import 'abortcontroller-polyfill'; 来源： https://stackoverflow.com/questions

问题 In the useEffect function, If i just mention the getResults function variable, the app doesn't crash, but when i call it as i'm doing in code below, i get these errors : react-dom.development.js:21857 Uncaught TypeError: destroy is not a function and Consider adding an error boundary to your tree to customize error handling behavior. function App() { const [foods, setFoods] = useState([]); const [isLoaded, setIsLoaded] = useState(false); useEffect(() => getResponse()); const getResponse =

问题 In the useEffect function, If i just mention the getResults function variable, the app doesn't crash, but when i call it as i'm doing in code below, i get these errors : react-dom.development.js:21857 Uncaught TypeError: destroy is not a function and Consider adding an error boundary to your tree to customize error handling behavior. function App() { const [foods, setFoods] = useState([]); const [isLoaded, setIsLoaded] = useState(false); useEffect(() => getResponse()); const getResponse =

问题 I am using react native and expo. I have some json data on the screen (similator iOS) such as A Acompany B Bcompany here A is symbol and Acompany is name When user click on it it should redirect to another screen such as (Stock.js) and pass the symbol as well? How can I redirect it to another screen when user click on it and send this data ( symbol )? My code: import React, { useState, useEffect } from "react"; import { StyleSheet, View, TouchableWithoutFeedback, Keyboard, FlatList, TextInput

问题 Issue I need to download query results from an endpoint by streaming results to a CSV file. This is in an effort to support enormous ResultSets being sent through the browser at one time. Is there a way to accomplish this using Axios in the context of a React App? I have seen fetch() and know that it has the following characteristics: returns ReadableStream Is NOT supported by IE11 Does NOT allow for intercepting requests The status of a response relates to the request itself, not the HTTP

问题 I have a large JSON blob I would like to have preloaded with my webpage. To do this, I have added <link rel="preload" as="fetch" href="/blob.json"> to my page. I also have a JS request to fetch the same blob. This does not work, and the console reports: [Warning] The resource blob.json was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing. MDN claims that this can be fixed by adding crossorigin to the