[Redux] Extracting Presentational Components -- Todo, TodoList

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[Redux] Extracting Presentational Components -- Todo, TodoList

Code to be refactored: let nextTodoId = 0; class TodoApp extends Component { render() { const { todos, visibilityFilter } = this.props; const visibleTodos = getVisibleTodos( todos, visibilityFilter ); return ( <div> <input ref={node => { this.…

[Redux] Extracting Presentational Components -- AddTodo

The code to be refactored: let nextTodoId = 0; class TodoApp extends Component { render() { const { todos, visibilityFilter } = this.props; const visibleTodos = getVisibleTodos( todos, visibilityFilter ); return ( <div> <input ref={node => { t…

[Redux] Extracting Presentational Components -- Footer, FilterLink

Code to be refactored: let nextTodoId = 0; class TodoApp extends Component { render() { const { todos, visibilityFilter } = this.props; const visibleTodos = getVisibleTodos( todos, visibilityFilter ); return ( <div> <input ref={node => { this.…

[Redux] Extracting Presentational Components -- TodoApp

Finally, I just noticed that the to-do app component doesn't actually have to be a class. I can turn it into a function. I prefer to-do that when possible. Code to be refactored: class TodoApp extends Component { render() { const { todos, visibilityF…

[Redux] Extracting Container Components -- Complete

Clean TodoApp Component, it doesn't need to receive any props from the top level component: const TodoApp = () => ( <div> <AddTodo /> <VisibleTodoList /> <Footer /> </div> ); Also we don't need wrap ReactDOM.render() into…

[Redux] Redux: Extracting Container Components -- AddTodo

Code to be refactored: const AddTodo = ({ onAddClick }) => { let input; return ( <div> <input ref={node => { input = node; }} /> <button onClick={() => { onAddClick(input.value); input.value = ''; }}> Add Todo </button> &l…

[Redux] Extracting Container Components (FilterLink)

Learn how to avoid the boilerplate of passing the props down the intermediate components by introducing more container components. Code to be refactored: const FilterLink = ({ filter, currentFilter, children, onClick }) => { if (filter === currentFil…

[Redux] Extracting Container Components -- VisibleTodoList

Code to be refacted: const TodoList = ({ todos, onTodoClick }) => ( <ul> {todos.map(todo => <Todo key={todo.id} {...todo} onClick={() => onTodoClick(todo.id)} /> )} </ul> ); let nextTodoId = 0; const TodoApp = ({ todos, visibili…

[Redux] Extracting Action Creators

We will create an anction creator to manage the dispatch actions, to keep code maintainable and self-documenting by extracting action creators from the components. let nextTodoId = 0; const ACTION_CREATOR = { addTodo: (text) => { return { type: 'ADD_…

react+redux+generation-modation脚手架添加一个todolist

当我遇到问题: 要沉着冷静. 要管理好时间. 别被bug或error搞的不高兴,要高兴,又有煅炼思维的机会了. 要思考这是为什么? 要搞清楚问题的本质. 要探究问题,探究数据的流动. TodoList 1. 编写actions.js 分析state 试着拆分成多个reducer 3. 了解store 4. 了解redux数据流生命周期 5. 分析容器组件和展示组件搞清楚,数据到底是如何流动的? 6. 编写展示组件的代码 7. 编写容器组件 8. 传入store 9. 其他 TodoList 脚…

用react + redux + router写一个todo

概述最近学习redux,打算用redux + router写了一个todo.记录下来,供以后开发时参考,相信对其他人也有用. 注意: 我只实现了Footer组件的router,其它组件的实现方法是类似的. 由于react-router升级到V4,所以redux官网的demo有些地方不再适用. 代码代码请见我的github 组织架构如下图:…

react+redux+generation-modation脚手架搭建一个todolist

TodoList 1. 编写actions.js 2. 分析state 试着拆分成多个reducer 3. 了解store 4. 了解redux数据流生命周期 5. 分析容器组件和展示组件搞清楚,数据到底是如何流动的? 6. 编写展示组件的代码 7. 编写容器组件 8. 传入store 9. 总结 10. 参考 TodoList 脚手架Github地址 1. 编写actions.js 2. 分析state 试着拆分成多个reducer 3. 了解store store.getState() s…

详解 Node + Redux + MongoDB 实现 Todolist

前言为什么要使用 Redux? 组件化的开发思想解放了繁琐低效的 DOM 操作,以 React 来说,一切皆为状态,通过状态可以控制视图的变化,然后随着应用项目的规模的不断扩大和应用功能的不断丰富,过多的状态变得难以控制,以至于当不同的组件中触发了同一个状态的修改或者引发了视图的更新,我们可能搞不清楚到底发生了什么,state 的变化已经变得有些难以预测和不受控制,因此 Redux 应运而生,通过对 Flux 思想的实践和增强,对状态更新发生的时间和方式进行限制,Redux 试图让 state…

Presentational and Container Components

https://medium.com/@dan_abramov/smart-and-dumb-components-7ca2f9a7c7d0 There’s a simple pattern I find immensely useful when writing React applications. If you’ve been doing React for a while, you have probably already discovered it. This article exp…

用react+redux写一个todo

概述最近学习redux,打算用redux写了一个todo.记录下来,供以后开发时参考,相信对其他人也有用. 代码代码请见我的github 组织架构如下图:…

[转] How to dispatch a Redux action with a timeout?

How to dispatch a Redux action with a timeout? Q I have an action that updates notification state of my application. Usually this notification will be an error or info of some sort. I need to then dispatch another action after 5 seconds that will ret…

[Redux] Passing the Store Down Explicitly via Props

n the previous lessons, we used this tool to up level variable to refer to the Redux chore. The components that access this chore, such as the container components, read this straight from it, subscribe to this chore, and dispatch actions on this cho…

更改了react-redux 官方网站的todolist结构

最近在学习胡子大哈的react小书,内容讲的由浅入深,很值得react,react-redux小白一读. 废话不多说直接上地址:http://huziketang.mangojuice.top/books/react/ react小书看过两遍,而且都认真跟着操作了,里面的react-redux还是理解的不透彻,于是又去react-redux的官网学习,下载了示例:Todo列表,看了一下代码结构跟胡子大哈react小书里讲的不一样,我还是比较喜欢react小书里的代码结构: 所有的 Dumb 组件…

3.2 Redux TodoApp

上一节讲完了 redux 中的概念,但是仍然没有和 react 联系起来,这一节将利用 redux 在 react 中实现完整的 todolist: 在 react 使用 redux 通过 Provider 连接 react 和 redux store 创建 action creators 创建 reducer 创建 Container Component 床架 Dummy Component 3.2.1 在 react 使用 redux redux 可以和很多第三方的框架结合起来使用,为了在…

React + Redux 入坑指南

Redux 原理 1. 单一数据源 all states ==>Store 随着组件的复杂度上升(包括交互逻辑和业务逻辑),数据来源逐渐混乱,导致组件内部数据调用十分复杂,会产生数据冗余或者混用等情况. Store 的基本思想是将所有的数据集中管理,数据通过 Store 分类处理更新,不再在组件内放养式生长. 2. 单向数据流 dispatch(actionCreator) => Reducer => (state, action) => state 单向数据流保证了数据的变化是有…

Redux你的Angular 2应用--ngRx使用体验

Angular2和Rx的相关知识可以看我的Angular 2.0 从0到1系列第一节:Angular 2.0 从0到1 (一)第二节:Angular 2.0 从0到1 (二)第三节:Angular 2.0 从0到1 (三)第四节:Angular 2.0 从0到1 (四)第五节:Angular 2.0 从0到1 (五)第六节:Angular 2.0 从0到1 (六)第七节:Angular 2.0 从0到1 (七)第八节:Angular 2.0 从0到1 (八)番外:Angular 2.0 从0到1…