// AntdTest 測試 redux 元件
// 在src/index.js檔案中 import 'antd/dist/antd.css' 安裝 antd 的指令 npm install antd --save
import React, { Component } from 'react'
import { Button, Pagination, List, Input } from 'antd';
import store from '../store'
export default class AntdTest extends Component {
constructor(props) {
super(props)
console.log(store, 'store')
this.state = store.getState();
store.subscribe(this.storeChange) // 訂閱 Redux的狀态---> 解決store裡的資料已經更新了,但是元件還沒有進行更新
console.log(this.state)
}
// 輸入框 change 事件
changeValue = e => {
// console.log(e.target.value);
const action = {
type:'changeInput',
value:e.target.value
}
store.dispatch(action)
}
// 更新store
storeChange = () => {
this.setState(store.getState())
}
// 添加條目功能
addItem = () => {
const action = { type:'addItem'}
store.dispatch(action)
}
// 删除條目功能
deleteItem = (index) => {
console.log(this,'this')
const action = {
type:'deleteItem',
index
}
store.dispatch(action)
}
// 渲染函數
render() {
return (
<div className="antd-box">
<div>store裡面的資料name:{this.state.name}</div>
<Input
placeholder='請添加'
style={{ width:'250px', marginRight:'10px'}}
onChange={this.changeValue}
/>
<Button type="primary" onClick={this.addItem}>添加條目</Button>
<div style={{margin:'10px',width:'300px'}}>
<List
bordered
dataSource={this.state.testList}
renderItem={(item, index)=>(<List.Item onClick={(index) => this.deleteItem(index)}>{item}</List.Item>)}
/>
</div>
<Pagination defaultCurrent={1} total={50} />
<Button type="primary">Primary</Button>
<Button>Default</Button>
<Button type="dashed">Dashed</Button>
<Button type="link">Link</Button>
</div>
)
}
}
// store/index檔案 如果你要使用中間件,就必須在redux中引入applyMiddleware
import { createStore, applyMiddleware, compose } from 'redux';
// import thunk from 'redux-thunk'
import reducer from './reducer'
import mySaga from './mySaga'
import createSagaMiddleware from 'redux-saga' //引入saga
const sagaMiddleware = createSagaMiddleware(); //建立saga中間件
// 使用Chrome浏覽器安裝插件,在浏覽器右上角有三個點,然後點選"更多工具",再點選"擴充程式",再點選右側的"打開Chrome網上商店",然後搜尋Redux DevTools 直接安裝;(FQ工具)
// 配置Redux Dev Tools插件 控制台調試倉庫資料
// const store = createStore(reducer,window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__())
// redux-thunk 要和 Redux Dev Tools插件一并使用了,需要使用增強函數。使用增加函數前需要先引入compose
// Redux的中間件 redux-thunk Redux-saga
const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ ?
window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__({}) : compose
// const enhancer = composeEnhancers(applyMiddleware(thunk)) // 如果你想用 redux-thunk
const enhancer = composeEnhancers(applyMiddleware(sagaMiddleware)) // 如果你想用 redux-saga
const store = createStore(reducer, enhancer) // 建立資料存儲倉庫
// then run the saga
sagaMiddleware.run(mySaga)
export default store
// 官方寫法
// const store = createStore(
// reducer,
// applyMiddleware(thunk)
// )
// store/reducer.js 檔案 預設資料 Reducer裡隻能接收state,不能改變state
const initState = {
testList:[
'vue',
'react'
],
inputValue: '請輸入内容',
name: 'redux'
}
// state: 指的是原始倉庫裡的狀态。
// action: 指的是action新傳遞的狀态
// Reducer裡編寫業務邏輯
export default (state = initState, action) => { //就是一個方法函數
console.log(state,'redux-state',action,'redux-action')
if (action.type === 'changeInput') {
let newState = JSON.parse(JSON.stringify(state)) // 深度拷貝state
newState.inputValue = action.value
return newState
}
//根據type值,編寫業務邏輯
if (action.type === 'addItem' ) {
let nState = JSON.parse(JSON.stringify(state)) // 新增
console.log(nState,'nState')
nState.testList.push(nState.inputValue);
// nState.inputValue = '';
return nState
}
if (action.type === 'deleteItem' ) {
let newState = JSON.parse(JSON.stringify(state))
newState.testList.splice(action.index,1) //删除
return newState
}
return state
}