redux

Objects are not valid as a react child (In Internet explorer 11 for React 15.4.1)

别等时光非礼了梦想. 提交于 2020-12-27 08:49:07
问题 Objects are not valid as a React child (found: object with keys {$$typeof, type, key, ref, props, _owner, _store}). If you meant to render a collection of children, use an array instead or wrap the object using createFragment(object) from the React add-ons. Check the render method of App . AppContainer : const mapDispatchToProps = (dispatch) => { return { } } } } Component: class App extends Component { render() { return ( ); } } Above is my render function for app.js. This Code is working

【第554期】Webpack 一探究竟

自作多情 提交于 2020-12-25 13:39:56
前言 本文来自@晓风东东的投稿,相信webpack大家应该很熟悉了~~ 正文从这开始~ 记得我第一次上 webpack 官网的时候看了半天,最后总结是:这是个什么东西?!接下来的第二次第三次依然会有这种感觉,webpack 令人懵逼的文档对新手来说简直是噩梦。这篇文章针对 webpack 中令人疑惑的部分进行全面讲解,让你不再懵逼。 Webpack 是目前最火 React 和 Redux 打包工具,使用 Angular2 或者其他框架的人们可能也用了 Webpack 一段时间了。 当我第一次见到 Webpack 配置文件的时候,它看起来像火星文 来源: oschina 链接: https://my.oschina.net/u/4274700/blog/4840186

React 16 beta 版发布!

我的梦境 提交于 2020-12-24 16:00:44
作者: lizheming 编辑:魔卡 原文地址: http://www.zcfy.cc/@lizheming ━━━━━ 令人欣慰,React 16 首个 beta 版已经发布,可以公开测试了!🎉 下面我来告诉大家如何使用以及新版的一些值得注意的地方。 如何使用 安装 由于还是 beta 版,常规的 NPM 安装命令仍然会使用 15.6 正式版。beta 版我们使用 next 标签发布在 NPM 上,你需要使用如下命令安装使用 beta 版: # Yarn yarn add react@next react-dom@next # NPM npm install --save react@next react-dom@next Javascript 环境要求 由于 React 16 依赖 新的数据集合类型 Map 和 Set ,所以我们不支持一些老浏览器和设备(例如 <IE11)。如果你要支持它们的话,最好为项目引入一个全局的 Polyfill,core-js 和 babel-polyfill 都是不错的选择。 下面是在 React 16 中使用 core-js 来支持老浏览器的示例: import 'core-js/es6/map'; import 'core-js/es6/set'; import React from 'react'; import ReactDOM from

react + typescript 学习

拜拜、爱过 提交于 2020-12-19 08:59:13
react,前端三大框架之一,也是非常受开发者追捧的一门技术。而 typescript 是 javascript 的超集,主要特点是对 类型 的检查。二者的结合必然是趋势,不,已经是趋势了。react 文档、typescript 文档都看过,例子也敲过了,对此也都有了一定的理解,但是把二者很好的结合在一起,还是遇到了一些问题。纯粹记录一些,当然也希望有优秀资源的,提供一下,分享一下。提前道谢了~ 学习曲线 首先,想到的是到 官网,看相关文档,会系统些。 typescript 中文网 jsx typescript 中文网 React & Webpack 看后,也实践了一遍,也算是入手练习了,但离实际应用还很远呢。 create-react-app + typescript 对应的英文原版是 microsoft/TypeScript-React-Starter 。 中文版有点落后,英文版的比较新。 最重要的一点是:很多根据中文网搭建练习时踩坑点的解决方案都是在其 issure 中找到的。 tslint相关 在 tslint.json 中加入 interface name must start with a capitalized I 接口名称必须以大写的I开头 microsoft/TypeScript-React-Starter "rules": { "interface-name":

How do I display 3 card components horizontally with react bootstrap and grids?

依然范特西╮ 提交于 2020-12-16 03:49:12
问题 db.json { "products": [ { "id": 1, "name": "Moto G5", "quantity": 2, "price": 13000 }, { "id": 2, "name": "Racold Geyser", "quantity": 3, "price": 6000 }, { "id": 3, "name": "Dell Inspiron", "quantity": 4, "price": 50000 }, { "id": 4, "name": "Epson Printer", "quantity": 1, "price": 9500 }, { "name": "Lenovo G50", "quantity": 2, "price": 50000, "id": 5 } ] } App.js import React from 'react'; import {BrowserRouter as Router, Route, Switch, NavLink} from 'react-router-dom'; import

React Redux Persist is rehydrating, but no stored data is retrieved, instead, default

馋奶兔 提交于 2020-12-15 08:55:41
问题 I've been struggling with this problem for two days, so I need help! I have a React web in wich i've added Redux Persist (also Redux Saga for handling requests) as the documentation said. I'm testing with a store that doesn't have any saga in the middle, when I trigger an action, the data is updated, I can see it in the Debugger, but when i refresh, despite the Redux Hydrate process runs, that value goes back to the default one. store.js import { createStore, applyMiddleware, compose } from

React Redux Persist is rehydrating, but no stored data is retrieved, instead, default

若如初见. 提交于 2020-12-15 08:53:16
问题 I've been struggling with this problem for two days, so I need help! I have a React web in wich i've added Redux Persist (also Redux Saga for handling requests) as the documentation said. I'm testing with a store that doesn't have any saga in the middle, when I trigger an action, the data is updated, I can see it in the Debugger, but when i refresh, despite the Redux Hydrate process runs, that value goes back to the default one. store.js import { createStore, applyMiddleware, compose } from

I am getting an error GET http://localhost:3000/api/products 404 (Not Found)

三世轮回 提交于 2020-12-15 05:32:43
问题 Well, there are lots of questions in StackOverflow about this error I've seen all of them none of them is working for me. I'm using react with redux trying to fetch some products. my backend server node is running on port 5000 and I'm using concurrently to start both servers at the same time whenever I'm trying fetch the data its using port 3000 where is my frontend running. Please somebody help me to solve this issue package.json file { "name": "proshop", "version": "1.0.0", "description":

I am getting an error GET http://localhost:3000/api/products 404 (Not Found)

混江龙づ霸主 提交于 2020-12-15 05:31:59
问题 Well, there are lots of questions in StackOverflow about this error I've seen all of them none of them is working for me. I'm using react with redux trying to fetch some products. my backend server node is running on port 5000 and I'm using concurrently to start both servers at the same time whenever I'm trying fetch the data its using port 3000 where is my frontend running. Please somebody help me to solve this issue package.json file { "name": "proshop", "version": "1.0.0", "description":

I am getting an error GET http://localhost:3000/api/products 404 (Not Found)

三世轮回 提交于 2020-12-15 05:31:52
问题 Well, there are lots of questions in StackOverflow about this error I've seen all of them none of them is working for me. I'm using react with redux trying to fetch some products. my backend server node is running on port 5000 and I'm using concurrently to start both servers at the same time whenever I'm trying fetch the data its using port 3000 where is my frontend running. Please somebody help me to solve this issue package.json file { "name": "proshop", "version": "1.0.0", "description":