redux | 易学教程

Access State inside of mapDispatchToProps method

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问题 I have written a container component using redux and my implementation for mapDispathToProps looks like this const mapDispatchToProps = (dispatch, ownProps) => { return { onChange: (newValue) => { dispatch(updateAttributeSelection('genre', newValue)); dispatch(getTableData(newValue, ownProps.currentYear)); } } } The problem is that in order to getTableData i need the state of some other components. How can I get access to the state object in this method? 回答1: You can use redux-thunk to create

Draft.js - Unable to get data from the database. Cross-origin error

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问题 I am trying to use Draft.js in the Blog app I am creating. It all seems fine when saving data to the database and getting it back, just I cannot seem to get createWithContent to work. When I write the following, the data does get saved to the database as I am simply creating an empty editor which then is updated by the user and sent to the database after convertToRaw. const postDetails = useSelector((state) => state.postDetails); const { loading, post, error } = postDetails; const

Getting an error “A non-serializable value was detected in the state” when using redux toolkit - but NOT with normal redux

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问题 I am trying to switch an app I am building over to use Redux Toolkit, and have noticed this error coming up as soon as I switched over to configureStore from createStore: A non-serializable value was detected in the state, in the path: `varietals.red.0`. Value:, Varietal { "color": "red", "id": "2ada6486-b0b5-520e-b6ac-b91da6f1b901", "isCommon": true, "isSelected": false, "varietal": "bordeaux blend", }, Take a look at the reducer(s) handling this action type: TOGGLE_VARIETAL. (See https:/

Getting an error “A non-serializable value was detected in the state” when using redux toolkit - but NOT with normal redux

阅读更多关于 Getting an error “A non-serializable value was detected in the state” when using redux toolkit - but NOT with normal redux

Getting an error “A non-serializable value was detected in the state” when using redux toolkit - but NOT with normal redux

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Getting an error “A non-serializable value was detected in the state” when using redux toolkit - but NOT with normal redux

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Flutter必备开源项目

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首页动态的展示导航栏的显示和隐藏日历模块展示日历的记录, 每日记录生成图片和保存图片发现类似朋友圈的内容展示, 图片浏览和保存图片动态详情模块, 动态的评论和删除评论多语言国际化部分页面适配了韩语和英语颜色主题和暗黑模式部分页面支持手动的修改项目主题色, 黑色主题(暗黑模式)适配用到的插件 dio https://pub.dartlang.org/packages/dio Dart社区提供的http请求库，不仅支持常见的网络请求，还支持Restful API、FormData、拦截器、请求取消、Cookie管理、文件上传/下载、超时等操作 provider https://pub.dev/packages/provider Flutter 官方推荐的状态管理插件, 简单的应用状态管理 flutter_redux https://pub.dev/packages/flutter_redux flutter 版的 redux pull_to_refresh https://pub.dev/packages/pull_to_refresh 一个提供上拉加载和下拉刷新的组件,同时支持 Android 和 ios flutter_staggered_grid_view https://pub.dev/packages/flutter_staggered_grid

GraphQL

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感谢支持ayqy个人订阅号，每周义务推送1篇（ only unique one ）原创精品博文，话题包括但不限于前端、Node、Android、数学（WebGL）、语文（课外书读后感）、英语（文档翻译）如果觉得弱水三千，一瓢太少，可以去 http://blog.ayqy.net 看个痛快写在前面本文第一部分翻译自REST 2.0 Is Here and Its Name Is GraphQL，标题很有视觉冲击力，不小心上钩了剩余部分是对GraphQL的思考。现在，我们边看译文边汇聚疑问一.译文 GraphQL是一种API查询语言。虽然与REST有本质区别，但GraphQL可以作为REST的备选项，它提供了高性能、良好的开发体验和一些强大的工具通过本文，我们来看看怎样用REST和GraphQL来处理一些常见场景。本文附有3个项目，提供了流行电影和演员信息API，还用HTML和jQuery搭了个简单的前端应用，可以查看对应的REST和GraphQL源码我们将通过这些API来看这两种技术的差异，以便了解其优缺点。开始之前，先布置舞台，快速过一下这些技术是怎么冒出来的 Web早期 Web早期很简单，早期的Web应用就是静态HTML文档。演化到网站想包含存在数据库（例如SQL）里的动态内容，并通过JavaScript来添加交互功能

ES6 对象解构赋值（浅拷贝 VS 深拷贝）

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对象的扩展运算符（...）用于取出参数对象的所有可遍历属性，拷贝到当前对象之中。拷贝对象 let aa = { age: 18, name: 'aaa' } let bb = {...aa}; console.log(bb); // {age: 18, name: "aaa"} 合并对象扩展运算符（...）可以用于合并两个对象 let aa = { age: 18, name: 'aaa' } let bb = { sex: '男' } let cc = {...aa, ...bb}; // 等同于： // let cc = Object.assign({}, aa, bb); console.log(cc); // {age: 18, name: "aaa", sex: "男"} 拷贝并修改对象在扩展运算符后面，加上自定义的属性，则扩展运算符内部的同名属性会被覆盖掉。 let aa = { age: 18, name: 'aaa' } let dd = {...aa, name: 'ddd'}; // 等同于： // let dd = {...aa, ...{name: 'ddd'}}; // let dd = Object.assign({}, aa, { name: 'ddd'}); console.log(dd); // {age: 18, name: "ddd"}

[Full-stack] 快速上手开发

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故事背景 [1] 博客笔记结合《React快速上手开发》再次系统地、全面地走一遍。 [2] React JS Tutorials ：包含了JS --> React --> Redux --> Mobx 项目部署着眼于ful-stack全局，了解前后端的部署，之后才能深刻理解react的角色与位置。 1. 服务器部署 [AWS] Deploy react project on EC2 2. 用户权限管理 [AWS] OAuth2.0 [AWS] User management [AWS] Amazon Cognito 3. 这就是未来后端的趋势 [AWS] Serverless React基本路线一、静态的html变为了动态生成 React自己的html表达方式 <script> ReactDOM .render( React.DOM . h1 ( { id : "my-heading" }, React.DOM . span ( null , React.DOM . em ( null , "Hell" ), "o" ), " world!" ), document.getElementById( 'app' ) ); </script> 命名冲突：class, for, style <script> ReactDOM.render( /* // COUNTEREXAMPLE

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