create-react-app

问题 I am using create-react-app as an initial scaffold for an app that I am working on that exists within an existing php/jQuery app. After a bit of fiddling about I have been able to setup communication between the non-React app and the React app by using the method described here. What I'm currently doing is creating a build of the React app then inserting it into the non-React app, however I am finding troubleshooting the build version of the app slow and cumbersome because I am unable to

问题 I am using create-react-app as an initial scaffold for an app that I am working on that exists within an existing php/jQuery app. After a bit of fiddling about I have been able to setup communication between the non-React app and the React app by using the method described here. What I'm currently doing is creating a build of the React app then inserting it into the non-React app, however I am finding troubleshooting the build version of the app slow and cumbersome because I am unable to

问题 I have created a .env file in my project root but I'm new to working with environments / variables and so I'm unsure how to integrate the file so I can override the stock, non-ejected react-app eslint settings. // My .env file has just this EXTEND_ESLINT = "true" The c-r-a docs explain what the variable is, but not now to set it to true. Also, the section on 'Extending the ESLint config' is helpful only for once the var is set to true. // stock create-react-app package.json "scripts": {

问题 I was asked this in an interview. I could not answer. "browserslist": [ ">0.2%", "not dead", "not ie <= 11", "not op_mini all" ] I can see that Its an array. "not ie <=11" means will not run on lower than Internet Explorer v11 "op_mini" must be related to Opera mini. But I want to know why it is required. 回答1: That's a React configuration option to know which browsers the build process should target to. As the documentation says: The browserslist configuration controls the outputted

问题 I was asked this in an interview. I could not answer. "browserslist": [ ">0.2%", "not dead", "not ie <= 11", "not op_mini all" ] I can see that Its an array. "not ie <=11" means will not run on lower than Internet Explorer v11 "op_mini" must be related to Opera mini. But I want to know why it is required. 回答1: That's a React configuration option to know which browsers the build process should target to. As the documentation says: The browserslist configuration controls the outputted

问题 I would like users to be able to update on the spot when a new service worker is available and waiting? I'm already able to show a pop up when new update is available but I would like to add a button to force update on the spot. I understand this can be achieved with calling skipWaiting but not sure how to implement it with a Create React App. Have anyone able to achieve this? Would appreciate the help. Thank you! 回答1: The CRA build\service-worker.js file now (v3 plus) includes code to handle

问题 Is there a way to add long press event in react-web application ? I have list of addresses. On long press on any address, I want to fire event to delete that address followed by a confirm box. 回答1: You can use MouseDown, MouseUp, TouchStart, TouchEnd events to control timers that can act as a long press event. Check out the code below class App extends Component { constructor() { super() this.handleButtonPress = this.handleButtonPress.bind(this) this.handleButtonRelease = this

问题 Is there a way to add long press event in react-web application ? I have list of addresses. On long press on any address, I want to fire event to delete that address followed by a confirm box. 回答1: You can use MouseDown, MouseUp, TouchStart, TouchEnd events to control timers that can act as a long press event. Check out the code below class App extends Component { constructor() { super() this.handleButtonPress = this.handleButtonPress.bind(this) this.handleButtonRelease = this

问题 Is there a way to add long press event in react-web application ? I have list of addresses. On long press on any address, I want to fire event to delete that address followed by a confirm box. 回答1: You can use MouseDown, MouseUp, TouchStart, TouchEnd events to control timers that can act as a long press event. Check out the code below class App extends Component { constructor() { super() this.handleButtonPress = this.handleButtonPress.bind(this) this.handleButtonRelease = this

问题 I used react-router-dom and I build my react-app. When I deploy it on the server, I get a blank page and the console is empty. My App.js is : import React, { Component } from 'react'; import { Route, Switch, BrowserRouter} from 'react-router-dom'; import Agenda from './components/Agenda/Agenda'; import Planning from './components/Planning/Planning'; class App extends Component { render() { return ( <div> <BrowserRouter basename="/"> <Switch> <Route exact path="/" component={Agenda} /> <Route