create-react-app

问题 Building a Sort-Visualizer in React using the Create-React-App [https://roy-05.github.io/sort-visualizer/ ] I'm animating each iteration of the loop using setTimeouts. On dev console I get the following warning: Line 156:32: Function declared in a loop contains unsafe references to variable(s) 'minimum', 'minimum', 'minimum', 'minimum' no-loop-func Here's the code-snippet: for(let i=0; i<arr.length-1; i++){ let minimum = i; //Declare minimum here setTimeout(()=>{ for(let j = i+1; j<arr.length

问题 I am using jest:24.9.0 without any configuration, installed globally from a create-react-app. Inside these files I am using es6 modules. There is no error when using "test": "react-scripts test" However when I move to use jest with "test": "jest --config jest.config.js", I see the below error. FAIL src/configuration/notifications.test.js ● Test suite failed to run /var/www/management/node/src/configuration/notifications.test.js:1 ({"Object.<anonymous>":function(module,exports,require,_

问题 I have followed instructions here to get antd working fine with CRA . But while using it from storybook , I was getting an error as: Build fails against a mixin with message Inline JavaScript is not enabled. Is it set in your options? I had fixed that following suggestions on an issue I raised here. Now, storybook understands antd but not importing components on demand . Is babel has to be configured separately for storybook? 1 . On using import { Button } from "antd"; I get this: 2 . On

问题 I've uploaded a create-react-app build (with an app.yaml file) to a GCP bucket. The app has then been deployed on a App Engine instance using the cloud shell. Going to the app's root URL works fine. But going to example.com/anything returns the following error: Error: Not Found The requested URL /anything was not found on this server. App.yaml file looks like this: runtime: python27 api_version: 1 threadsafe: true handlers: - url: /(.*\.(html|css|js)) static_files: build/\1 upload: build/(.*\

问题 I've uploaded a create-react-app build (with an app.yaml file) to a GCP bucket. The app has then been deployed on a App Engine instance using the cloud shell. Going to the app's root URL works fine. But going to example.com/anything returns the following error: Error: Not Found The requested URL /anything was not found on this server. App.yaml file looks like this: runtime: python27 api_version: 1 threadsafe: true handlers: - url: /(.*\.(html|css|js)) static_files: build/\1 upload: build/(.*\

问题 I'm just making a simple recipe fetching app using the create-react-app setup, but when I tried logging the response it logged it twice. I went backwards and deleted code until it stopped happening and for whatever reason it starts when I use the state hook: import React, { useState } from 'react'; import './App.css'; function App() { const APP_ID = '092fa53f'; const APP_KEY = '6fcf8c591c129cc3d01aefbda0d8a4d8'; const recipe_url = `https://api.edamam.com/search?q=chicken&app_id=${APP_ID}&app

问题 So I've read similar questions but answers were too complex for my understanding. I have not set up a back-end, I just use create-react-app and install react-router-dom, and while my websites can refresh on my localhost, when I upload them on internet, if I refresh any page except the home page, they give a 404 not found page error. these are the versions of my installed programs: "react": "^16.6.3", "react-dom": "^16.6.3", "react-router-dom": "^4.3.1", "react-scripts": "2.1.1" <BrowserRouter

问题 A page displays a list of objects [{name:, age:}, ...] A second page allows to update the name of a particular object. Then using hooks, how should I implement useEffect() so the list on the front page updates only when a name change has been detected? const [objects, setObjects] = useState([]); useEffect(()=> { getAllObjects() },[getAllObjects, objects]); 回答1: Instead of passing the entire object to the dependency array, make sure that you only pass name. Which you can do by returning the

问题 I want the classes in my React.js application to be available for export from .styl -files in the same way as it can be done from CSS Modules, but I can't find any ready-made solution to this problem. I found a guide to setting up CSS Modules in an application created with Create React App. I understand that you need to run npm run eject and somehow rewrite configuration files, but how – I don't understand. 回答1: You need to install next npm-packages in your project: stylus stylus-loader css

问题 I want the classes in my React.js application to be available for export from .styl -files in the same way as it can be done from CSS Modules, but I can't find any ready-made solution to this problem. I found a guide to setting up CSS Modules in an application created with Create React App. I understand that you need to run npm run eject and somehow rewrite configuration files, but how – I don't understand. 回答1: You need to install next npm-packages in your project: stylus stylus-loader css