下文有項目文件下載

在項目目錄中執行 npm install 安裝依賴，install start 啟動項目，網頁會自動打開


index.js

import React from ‘react‘import { render } from ‘react-dom‘import { createStore } from ‘redux‘import { Provider } from ‘react-redux‘import App from ‘./containers/App‘import todoApp from ‘./reducers‘let store = createStore(todoApp)let rootElement = document.getElementById(‘root‘)render(
  <Provider store={store}>
    <App />
  </Provider>,
  rootElement)

Action 創建函數和常量

actions.js

/*
 * action 類型
 */export const ADD_TODO = ‘ADD_TODO‘;export const COMPLETE_TODO = ‘COMPLETE_TODO‘;export const SET_VISIBILITY_FILTER = ‘SET_VISIBILITY_FILTER‘/*
 * 其它的常量
 */export const VisibilityFilters = {
  SHOW_ALL: ‘SHOW_ALL‘,
  SHOW_COMPLETED: ‘SHOW_COMPLETED‘,
  SHOW_ACTIVE: ‘SHOW_ACTIVE‘};/*
 * action 創建函數
 */export function addTodo(text) {
  return { type: ADD_TODO, text }}export function completeTodo(index) {
  return { type: COMPLETE_TODO, index }}export function setVisibilityFilter(filter) {
  return { type: SET_VISIBILITY_FILTER, filter }}

Reducers

reducers.js

import { combineReducers } from ‘redux‘import { ADD_TODO, COMPLETE_TODO, SET_VISIBILITY_FILTER, VisibilityFilters } from ‘./actions‘const { SHOW_ALL } = VisibilityFiltersfunction visibilityFilter(state = SHOW_ALL, action) {
  switch (action.type) {
    case SET_VISIBILITY_FILTER:
      return action.filter    default:
      return state  }}function todos(state = [], action) {
  switch (action.type) {
    case ADD_TODO:
      return [
        ...state,
        {
          text: action.text,
          completed: false
        }
      ]
    case COMPLETE_TODO:
      return [
        ...state.slice(0, action.index),
        Object.assign({}, state[action.index], {
          completed: true
        }),
        ...state.slice(action.index + 1)
      ]
    default:
      return state  }}const todoApp = combineReducers({
  visibilityFilter,
  todos})export default todoApp

容器組件

containers/App.js

import React, { Component, PropTypes } from ‘react‘import { connect } from ‘react-redux‘import { addTodo, completeTodo, setVisibilityFilter, VisibilityFilters } from ‘../actions‘import AddTodo from ‘../components/AddTodo‘import TodoList from ‘../components/TodoList‘import Footer from ‘../components/Footer‘class App extends Component {
  render() {
    // Injected by connect() call:
    const { dispatch, visibleTodos, visibilityFilter } = this.props    return (
      <div>
        <AddTodo
          onAddClick={text =>
            dispatch(addTodo(text))
          } />
        <TodoList
          todos={visibleTodos}
          onTodoClick={index =>
            dispatch(completeTodo(index))
          } />
        <Footer
          filter={visibilityFilter}
          onFilterChange={nextFilter =>
            dispatch(setVisibilityFilter(nextFilter))
          } />
      </div>
    )
  }}App.propTypes = {
  visibleTodos: PropTypes.arrayOf(PropTypes.shape({
    text: PropTypes.string.isRequired,
    completed: PropTypes.bool.isRequired  }).isRequired).isRequired,
  visibilityFilter: PropTypes.oneOf([
    ‘SHOW_ALL‘,
    ‘SHOW_COMPLETED‘,
    ‘SHOW_ACTIVE‘
  ]).isRequired}function selectTodos(todos, filter) {
  switch (filter) {
    case VisibilityFilters.SHOW_ALL:
      return todos    case VisibilityFilters.SHOW_COMPLETED:
      return todos.filter(todo => todo.completed)
    case VisibilityFilters.SHOW_ACTIVE:
      return todos.filter(todo => !todo.completed)
  }}// Which props do we want to inject, given the global state?// Note: use https://github.com/faassen/reselect for better performance.function select(state) {
  return {
    visibleTodos: selectTodos(state.todos, state.visibilityFilter),
    visibilityFilter: state.visibilityFilter  }}// 包裝 component ，註入 dispatch 和 state 到其默認的 connect(select)(App) 中；export default connect(select)(App)

展示組件

components/AddTodo.js

import React, { Component, PropTypes } from ‘react‘export default class AddTodo extends Component {
  render() {
    return (
      <div>
        <input type=‘text‘ ref=‘input‘ />
        <button onClick={(e) => this.handleClick(e)}>
          Add        </button>
      </div>
    )
  }

  handleClick(e) {
    const node = this.refs.input    const text = node.value.trim()
    this.props.onAddClick(text)
    node.value = ‘‘
  }}AddTodo.propTypes = {
  onAddClick: PropTypes.func.isRequired}

components/Footer.js

import React, { Component, PropTypes } from ‘react‘export default class Footer extends Component {
  renderFilter(filter, name) {
    if (filter === this.props.filter) {
      return name    }

    return (
      <a href=‘#‘ onClick={e => {
        e.preventDefault()
        this.props.onFilterChange(filter)
      }}>
        {name}
      </a>
    )
  }

  render() {
    return (
      <p>
        Show:
        {‘ ‘}
        {this.renderFilter(‘SHOW_ALL‘, ‘All‘)}
        {‘, ‘}
        {this.renderFilter(‘SHOW_COMPLETED‘, ‘Completed‘)}
        {‘, ‘}
        {this.renderFilter(‘SHOW_ACTIVE‘, ‘Active‘)}
        .
      </p>
    )
  }}Footer.propTypes = {
  onFilterChange: PropTypes.func.isRequired,
  filter: PropTypes.oneOf([
    ‘SHOW_ALL‘,
    ‘SHOW_COMPLETED‘,
    ‘SHOW_ACTIVE‘
  ]).isRequired}

components/Todo.js

import React, { Component, PropTypes } from ‘react‘export default class Todo extends Component {
  render() {
    return (
      <li
        onClick={this.props.onClick}
        style={{
          textDecoration: this.props.completed ? ‘line-through‘ : ‘none‘,
          cursor: this.props.completed ? ‘default‘ : ‘pointer‘
        }}>
        {this.props.text}
      </li>
    )
  }}Todo.propTypes = {
  onClick: PropTypes.func.isRequired,
  text: PropTypes.string.isRequired,
  completed: PropTypes.bool.isRequired}

components/TodoList.js

import React, { Component, PropTypes } from ‘react‘import Todo from ‘./Todo‘export default class TodoList extends Component {
  render() {
    return (
      <ul>
        {this.props.todos.map((todo, index) =>
          <Todo {...todo}
                key={index}
                onClick={() => this.props.onTodoClick(index)} />
        )}
      </ul>
    )
  }}TodoList.propTypes = {
  onTodoClick: PropTypes.func.isRequired,
  todos: PropTypes.arrayOf(PropTypes.shape({
    text: PropTypes.string.isRequired,
    completed: PropTypes.bool.isRequired  }).isRequired).isRequired}

react-redux 的 todomvc