React第三方组件5(状态管理之Redux的使用③TodoList中)

前端人人

发布于 2018-04-11 17:28:38

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发布于 2018-04-11 17:28:38

文章被收录于专栏：前端人人

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1、React第三方组件5(状态管理之Redux的使用①简单使用)---2018.03.20

2、React第三方组件5(状态管理之Redux的使用②TodoList上)---2018.03.21

3、React第三方组件5(状态管理之Redux的使用③TodoList中)---2018.03.22

4、React第三方组件5(状态管理之Redux的使用④TodoList下)---2018.03.23

5、React第三方组件5(状态管理之Redux的使用⑤异步操作)---2018.03.26

6、React第三方组件5(状态管理之Redux的使用⑥Redux DevTools)---2018.03.27

开发环境:Windows 8,node v8.9.1,npm 5.5.1,WebStorm 2017.2.2

1、首先复制一份redux2 到 redux3中，并修改路由

redux->Index.jsx

import React from 'react';
import {HashRouter, Route, NavLink, Redirect} from 'react-router-dom';
import Redux1 from './redux1/Index'
import Redux2 from './redux2/Index'
import Redux3 from './redux3/Index'

const Index = ({match}) =>
    <HashRouter>
        <div>
            <div className="nav">
                <NavLink to="/Redux/Redux1" activeClassName="selected">Redux1</NavLink>
                <NavLink to="/Redux/Redux2" activeClassName="selected">Redux2</NavLink>
                <NavLink to="/Redux/Redux3" activeClassName="selected">Redux3</NavLink>
            </div>
            <Route exact path={`${match.url}`}
                   render={() => (<Redirect to={`${match.url}/Redux1`}/>)}/>
            <Route path={`${match.url}/Redux1`} component={Redux1}/>
            <Route path={`${match.url}/Redux2`} component={Redux2}/>
            <Route path={`${match.url}/Redux3`} component={Redux3}/>
        </div>
    </HashRouter>
;

export default Index;

2、修改业务代码，redux3->Index.jsx

import React from 'react';
import {createStore} from 'redux';
import {Provider, connect} from 'react-redux';
import reducer from './reducer'

const store = createStore(reducer);

class Index extends React.Component {
    render() {
        return (
            <div className="todoList">
                <input type="text" ref="todoInput"/>
                <button onClick={() => this.props.dispatch({type: 'ADD', title: this.refs['todoInput'].value})}>添加
                </button>
                {
                    this.props.storeState.list.map(data =>
                        <li key={data.id}>
                            {data.title}
                            <button
                                onClick={() => this.props.dispatch({
                                    type: 'EDIT', obj: {
                                        id: data.id,
                                        status: data.status === 1 ? 0 : 1
                                    }
                                })}
                                className={data.status === 1 ? "del" : "recovery"}>
                                {data.status === 1 ? "删除" : "恢复"}
                            </button>
                        </li>
                    )
                }
            </div>
        );
    }
}

const mapStateToProps = state => ({storeState: state});

const Main = connect(
    mapStateToProps
)(Index);

export default () =>
    <Provider store={store}>
        <Main/>
    </Provider>
;

3、修改 reducer.js

export default (state = {
    list: []
}, action) => {
    let list = state.list;
    switch (action.type) {
        case 'ADD':
            if (!action.title) {
                alert('不能为空');
                return state;
            }
            list.push({id: state.list.length + 1, title: action.title, status: 1});
            return {list};
        case 'EDIT':
            let {id,status} = action.obj;
            list.find(data => data.id === id).status = status;
            return {list};
        default:
            return state;
    }
};