redux

When would bindActionCreators be used in react/redux?

由 。_饼干妹妹 提交于 2019-12-17 21:42:41
问题 Redux docs for bindActionCreators states that: The only use case for bindActionCreators is when you want to pass some action creators down to a component that isn't aware of Redux, and you don't want to pass dispatch or the Redux store to it. What would be an example where bindActionCreators would be used/needed? Which kind of component would not be aware of Redux ? What are the advantages/disadvantages of both options? //actionCreator import * as actionCreators from './actionCreators'

Element type is invalid: expected a string (for built-in components) or a class/function

由 狂风中的少年 提交于 2019-12-17 20:44:58
问题 import React from 'react'; import ReactDOM from 'react-dom'; import Map from './components/map/container/map'; import App from './App'; import './index.css'; import shell from './shared/utility/shell'; import { render } from 'react-dom' import { Provider } from 'react-redux' import { createStore, applyMiddleware, compose } from 'redux' import { routerMiddleware, ConnectedRouter } from 'react-router-redux' import thunk from 'redux-thunk' import createHistory from 'history/createBrowserHistory'

How to Read AsyncStorage on Android Correctly

由 為{幸葍}努か 提交于 2019-12-17 20:39:37
问题 It seems that it's possible access the AsyncStorage from Android (native); but I still struggling to make this work. In my React Native application, I have something like: Store const config = { ... } export const reducers = { ... user: user } let rootReducer = combineReducers(reducers) let reducer = persistReducer(config, rootReducer) User Reducer export class Actions { ... } const initialState = { first_name: : null, last_name: : null, email: null, addresses: [ { ... } ] } } } export const

taro实现聊天|taro仿微信聊天界面|taro+redux多端实例

由 瘦欲@ 提交于 2019-12-17 20:38:45
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 最近一直进行多端探索开发，之前就有使用 uniapp+vue开发过多端仿抖音/陌陌直播室项目 ，今天给大家分享的是基于taro+react多端仿微信界面聊天室TaroChat项目，同样支持编译到H5端、小程序、App端。 技术实现： 框架技术：react/taro/redux/reactNative iconfont图标：阿里字体图标库 自定义Navbar + Tabbar 弹窗组件：taroPop（基于Taro封装自定义对话框） 支持编译：H5端 + 小程序 + App端 /** * @desc Taro入口页面 app.jsx */ import Taro, { Component } from '@tarojs/taro' import Index from './pages/index' // 引入状态管理redux import { Provider } from '@tarojs/redux' import { store } from './store' // 引入样式 import './app.scss' import './styles/fonts/iconfont.css' import './styles/reset.scss' class App extends Component {

How to limit react-redux connect update re-renders to specific state branches?

由 半城伤御伤魂 提交于 2019-12-17 19:51:08
问题 I have an action and reducer that updates a global counter. This action is fired on a rapid interval. The reducer returns a new copy of the state for each action. The reducer looks like: import { handleActions } from 'redux-actions'; import { sceneTick } from './actions'; export default (state, action) => handleActions({ [sceneTick]: (state, action) => { return { ...state, loop: action.payload, } }, I am using react-redux 's connect method on various React components. Not all the components

Use fetch instead of ajax with redux-observable

由 China☆狼群 提交于 2019-12-17 19:34:23
问题 In redux-observable is it possible to use isomporphic-fetch instead of Rx.DOM.ajax? 回答1: (Note: RX.DOM.ajax is from RxJS v4 , and doesn't work with redux-observable which requires RxJS v5. The equivalent in v5 is Rx.Observable.ajax or import { ajax } from 'rxjs/observable/ajax'; ) It is indeed possible to use fetch() as well as any other AJAX API; though some adapt easier than others! The fetch() API returns a Promise , which RxJS v5 has built-in support for . Most operators that expect an

Flutter setState() or markNeedsBuild() called when widget tree was locked

由 ⅰ亾dé卋堺 提交于 2019-12-17 18:49:15
问题 I am having trouble finding the source to this exception, and the app is quite complex so it is hard to show any relevant part of the code. This is my repository at the point where the error happens: Github repo I suspect the following code might be the perpetrator: Widget buildResultCard(Map result, BuildContext context) { String name = result["value"]; String description = result["label"].replaceAll(new RegExp(r"<(?:.|\n)*?>"), ""); TextEditingController controller = new

redux fetch body is not use with no cors mode

由 吃可爱长大的小学妹 提交于 2019-12-17 18:43:13
问题 I have this action which calls a function: dispatch(Api({url: "my_url", method: "POST", data: data})) Here I am passing array as a data.. import fetch from 'isomorphic-fetch' export default function Api({url, method, headers, data}={}){ return dispatch => { console.log(data) console.log(url) console.log(method) console.log(JSON.stringify(data)) let response = fetch(url, { mode: 'no-cors', method: method || null, body: data || null, }).then(function(response) { console.log("response"); console

react，react-router，redux+react-redux 构建一个React Demo

由 亡梦爱人 提交于 2019-12-17 18:17:06
创建初始化应用 加速我们的npm。 npm install -g cnpm --registry=https://registry.npm.taobao.org 利用create-react-app 创建项目，执行下面创建我们的demo-react应用： cd ......到你自己的路径 create-react-app reactdemo 我习惯使用VSCode，我用vscode打开这个文件夹，目录结构如下。 安装需要的依赖 我们的项目需要: react-router: react-router-dom redux react-redux 在VSCode中打开powershell（Ctrl+`） 依次安装 cnpm install react-router --save cnpm install react-router-dom --save cnpm install redux --save cnpm install react-redux --save 打开package.json可以看到我们使用的版本： 不同的版本使用是有一些区别的，尤其路由使用上 创建几个组件页面 在src下创建几个文件夹存放我们使用的组件 在各自文件夹下创建组件js Login.js import React,{ Component } from 'react'; //=====组件=====

React-Redux and Websockets with socket.io

由 倖福魔咒の 提交于 2019-12-17 17:31:23
问题 I'm new with that technology React-Redux and I would like your help with some implementation. I want to implement one chat application with sockets (socket.io). First, the user has to sign up (I use passport in the server side) and after, if the sign up is successful the user has to connect to the webSocket. I thought that the best will be to use a middleware like a pipe for all the actions and depending of what kind of action gets the middleware, do different things. If the action type is
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