Redux怎么实现属性传递，介绍下原理

react-redux 数据传输: view- ->action- ->reducer-->store-->view

具体点击事件的数据通过redux传到view上：

1. view 上的ADDClick事件，通过mapDispatchToProps 把数据传到action ---> click: ( ) =>dispatch ( ADD )
2. action的ADD 传到 reducer上
3. reducer传到store上 const store = createStore ( reducer ) ;
4. store 通过 mapStateToProps 映射到view上

具体代码实现：

import React from 'react';import ReactDOM from 'react-dom';import { createStore } from 'redux';import { Provider, connect } from 'react-redux';class App extends React.Component{    render(){        let { text, click, clickR } = this.props;        return(            <div>                <div>数据:已有人{text}</div>                <div onClick={click}>加人</div>                <div onClick={clickR}>减人</div>            </div>        )    }}const initialState = {    text:5}const reducer = function(state,action){    switch(action.type){        case 'ADD':            return {text:state.text+1}        case 'REMOVE':            return {text:state.text-1}        default:            return initialState;    }}
let ADD = {    type:'ADD'}let Remove = {    type:'REMOVE'}
const store = createStore(reducer);
let mapStateToProps = function (state){    return{        text:state.text    }}
let mapDispatchToProps = function(dispatch){    return{        click:()=>dispatch(ADD),        clickR:()=>dispatch(Remove)    }}
const App1 = connect(mapStateToProps,mapDispatchToProps)(App);
ReactDOM.render(    <Provider store = {store}>        <App1></App1>    </Provider>,document.getElementById('root'))