react-redux

问题 I would like to start creating an application that will use Java on the backend and frontend react and redux. I tried to find a tutorial where it would be described how to start a project that will use these technologies (spring boot, redux 4 and react). Unfortunately, I did not find any such tutorial. Could you please help me and give me some tips how to get started? Thank you. 回答1: you can use Jhipster to create a project and add an appropriate dependency take look at this resource :

问题 I'm trying to do my exportable package in which I create the redux store. This is the code: import React from "react"; import { Provider } from "react-redux"; import { ErrorPage } from "../components/shared"; import { MyCoreApplication } from "./MyCoreApplication"; import { configureStore } from "../tools/configureStore"; import { createCoreHelp } from "./createCoreHelp"; export const MyCore = ({ withLogs, applicationSagas, applicationReducers, app, cookieInfo }) => { const help =

问题 I have a selectors folder with the selector.js file const isRecipeFavorited = state => recipeId => { const recipe = state.find(recipe => recipe.id === recipeId) console.log(`Selector isRecipeFavourtied: ${recipeId}`) return recipe ? recipe.is_fav : false } This is my favicon.js file which calls this useSelector. import React, {useState, useEffect} from 'react' import { FontAwesome } from '@expo/vector-icons' import { View, TouchableOpacity,StyleSheet, Text, Alert } from 'react-native' import

问题 I have a selectors folder with the selector.js file const isRecipeFavorited = state => recipeId => { const recipe = state.find(recipe => recipe.id === recipeId) console.log(`Selector isRecipeFavourtied: ${recipeId}`) return recipe ? recipe.is_fav : false } This is my favicon.js file which calls this useSelector. import React, {useState, useEffect} from 'react' import { FontAwesome } from '@expo/vector-icons' import { View, TouchableOpacity,StyleSheet, Text, Alert } from 'react-native' import

问题 I'm trying to wrap redux into a react hoc like this const WithUser = WrappedComponent => { return class ComponentWithUser extends Component { render() { return <WrappedComponent {...this.props}>{this.props.children}</WrappedComponent> } } } const mapStateToProps = state => { return { user: state.user, } } const composeWithUser = compose(connect(mapStateToProps, null), WithUser) export default composeWithUser If I going to write code in this way, is there any difference from directly connect

问题 I want to load multiple components on a single page and have different routes for all of them. For example i hit a route /article/1 and it loads a component, after scrolling through completely through that article i want the route to change to /article/2 and the corresponding article to load. I am using react and react router, basically i want 4 (article/3 , article/4) articles on a page and all these should be scrollable with the route changing as i scroll onto a particular article. How can

问题 I am building a multistep Form and I am trying to update my Data with the useState-Hook. Unfortunatly I do no how to pass the components of the hook as a prop, to update them, after performing an onClick Event Thats the important part of my code multisteform.js const defualtData = { Grundstück:'', Haus:"Haus", Wohnung:"Wohnung", Gewerbe:"Gewerbe", } const steps = [ {id: 'Häuser'}, {id: 'Fläche'}, {id: 'Grundstückerschlosse'}, {id: 'Bebauungsmöglichkeiten'} ] export const MultiStepFrom = () =>

问题 We have a parent app which embed App.js and it will load it N times (in order to sync other embedded app) Code 1, this is my 1st implementation. When App() is loaded N times, store will be created N times. We only want to the store to be created once, but can be loaded N times. App.js --- function App() { const store = createReduxStore(); return ( <> <StoreContext.Provider value={store}> <Component /> </StoreContext.Provider> </> ); } Code 2, store is a ref now, but correct me if wrong,

问题 We have a parent app which embed App.js and it will load it N times (in order to sync other embedded app) Code 1, this is my 1st implementation. When App() is loaded N times, store will be created N times. We only want to the store to be created once, but can be loaded N times. App.js --- function App() { const store = createReduxStore(); return ( <> <StoreContext.Provider value={store}> <Component /> </StoreContext.Provider> </> ); } Code 2, store is a ref now, but correct me if wrong,

问题 I am trying for few hours but can't figure out why my state is not called after adding an array of custom object . // In my component... const myRemoteArray = getRemoteArray() // Is working props.addAdItems(myRemoteArray) // Calls **1 via component.props /// ... const mapDispatchToProps = (dispatch) => { return { addAdItems: (items) => { // **1 // Items contains my array of objects dispatch(addAdItems(items)) // Calls **2 }, } } // My action export const addAdItems = (items) => { // **2 //