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 situation where I want to pass a value using Context + Hooks to another component, but the problem is that I do not need to import the component inside the provider to get the value in more understandable language, then imagine that I have two SideBarBlurChange components and SideBar inside the SideBarBlurChange component, I have a value in my case, this is a simple number that I want to pass inside the SideBar component, but the problem is that I don't want to import the SideBar

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 Is it possible to get an up-to-date state from the Store outside the Widget tree? In Provider, you can easily do that by calling Provider like this and the state will update if there is any change. Provider.of<WelcomeBloc>(context) But when I call: StoreProvider.of<AppState>(context).state.currentPage; I just get the current state but it doesn't update on changes (or I am doing something wrong there) In that case, I need to use that call in a block which updates on changes... what in my

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 //

问题 I have a component that looks like this: import React, { Component } from 'react'; import connect from 'react-redux/es/connect/connect'; import { FormattedNumber } from 'react-intl'; class Currency extends Component { render() { const { setting, amount } = this.props; const { employee } = setting; const { currency = 'USD', currency_symbol } = employee.settings; /*eslint-disable react/style-prop-object*/ const applicable_symbol = currency_symbol || currency; return ( <FormattedNumber value=