1.npm install --save redux (安装)
2.在src下面新建store文件夹,文件夹下面新建index.js文件、reducer.js文件
// store/index文件
import { createStore } from 'redux';
import reducer from './reducer'
// 使用Chrome浏览器安装插件,在浏览器右上角有三个点,然后点击"更多工具",再点击"扩展程序",再点击右侧的"打开Chrome网上商店",然后搜索Redux DevTools 直接安装;(翻墙工具)
// 配置Redux Dev Tools插件 控制台调试仓库数据
// const store = createStore(reducer,window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__())
const store = createStore(reducer) // 创建数据存储仓库
export default store
// store/reducer.js 文件 默认数据 Reducer里只能接收state,不能改变state
const initState = {
testList:[
'vue',
'react'
],
inputValue: '请输入内容',
name: 'redux'
}
// state: 指的是原始仓库里的状态。
// action: 指的是action新传递的状态
// Reducer里编写业务逻辑
export default (state = initState, action) => { //就是一个方法函数
console.log(state,'redux-state',action,'redux-action')
if (action.type === 'changeInput') {
let newState = JSON.parse(JSON.stringify(state)) // 深度拷贝state
newState.inputValue = action.value
return newState
}
//根据type值,编写业务逻辑
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
}
// AntdTest 测试 redux 组件
// 在src/index.js文件中 import 'antd/dist/antd.css' 安装 antd 的命令 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) // 订阅 Redux的状态---> 解决store里的数据已经更新了,但是组件还没有进行更新
console.log(this.state)
}
// 输入框 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())
}
// 添加条目功能
addItem = () => {
const action = { type:'addItem'}
store.dispatch(action)
}
// 删除条目功能
deleteItem = (index) => {
console.log(this,'this')
const action = {
type:'deleteItem',
index
}
store.dispatch(action)
}
// 渲染函数
render() {
return (
<div className="antd-box">
<div>store里面的数据name:{this.state.name}</div>
<Input
placeholder='请添加'
style={{ '200px', marginRight:'10px'}}
onChange={this.changeValue}
/>
<Button type="primary" onClick={this.addItem}>添加条目</Button>
<div style={{margin:'10px','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>
)
}
}
3.一般的还会在store下面新建一个actionType.js内容如下 需要用到的组件直接 import { CHANGE_INPUT , ADD_ITEM , DELETE_ITEM } from './store/actionTypes' 方便集中管理
export const CHANGE_INPUT = 'changeInput'
export const ADD_ITEM = 'addItem'
export const DELETE_ITEM = 'deleteItem'
4.进一步在拆解出来常用的功能
import {CHANGE_INPUT , ADD_ITEM,DELETE_ITEM} from './actionTypes'
export const changeInputAction = (value)=>({
type:CHANGE_INPUT,
value
})
export const addItemAction = ()=>({
type:ADD_ITEM
})
export const deleteItemAction = (index)=>({
type:DELETE_ITEM,
index
})
-------------------------------------------------------------------
// 使用方式
// 输入框 change 事件
changeValue = e => {
// console.log(e.target.value);
const action = changeInputAction(e.target.value)
store.dispatch(action)
}
// 添加条目功能
addItem = () => {
const action = addItemAction()
store.dispatch(action)
}
// 删除条目功能
deleteItem = (index) => {
console.log(this,'this')
const action = deleteItemAction(index)
store.dispatch(action)
}