redux7.x基本实现记录

1、下载相关依赖

npm i [email protected] [email protected] [email protected]  [email protected]  [email protected] [email protected] @types/[email protected]
@types/[email protected] @types/[email protected]

store - state - reducer - actions

2、configureStore

import { createStore, applyMiddleware } from "redux"
import thunkMiddleware from 'redux-thunk'
import { createLogger } from 'redux-logger'
import reducers from "./reducers"

const loggerMiddleware: any = createLogger()

let middlewares = [thunkMiddleware]

if (process.env.NODE_ENV == 'development') {
    middlewares.push(loggerMiddleware)
}
let composeEnhancers = applyMiddleware(...middlewares)

export default function configureStore(initialState?: any) {
    return composeEnhancers(createStore)(reducers, initialState)
}

3、reducers

import { combineReducers } from 'redux'
import test from "./reducers/test";

const reducers = combineReducers({
    test
})

export default reducers;

reducers/test.ts

import * as constants from "../actionTypes"
import { ITest } from "../states/test";

const initialState: ITest = {
    count: 0
}

interface ITestAction {
    type: string
    data: number
}

export default function addCount(
    state: ITest = initialState,
    action: ITestAction
) {
    switch (action.type) {
        case constants.ADD_COUNT:
            return {
                ...state,
                count: state.count + 1
            }
        case constants.SUB_COUNT:
            return {
                ...state,
                count: state.count - 1
            }
        case constants.SET_COUNT:
            return {
                ...state,
                count: action.data
            }
        default:
            return state
    }
}

action types

// test action type
export const ADD_COUNT = "ADD_COUNT"
export const SUB_COUNT = "SUB_COUNT"
export const SET_COUNT = "SET_COUNT"

4、页面引入及使用

import * as React from "react";
import { connect } from "react-redux";
import * as dataAPI from '../../api/dataAPI';
import { IRootState } from "../../redux/states";
import * as test from "../../redux/reducers/test"
import { ADD_COUNT } from "../../redux/actionTypes";

const Login = ({count, addCount}) => {

    const testApi = () => {
        dataAPI.getBlockNumber().then(res => {
            console.log(res)
        })
    }

    const add = () => {
        addCount(1)
        setTimeout(() => {
            console.log('>>>',count)
        }, 3000);
    }

    testApi()

    return (
        <div className="signFlowLoginPage">
            <div>测试redux数据：{count}</div>
            <button onClick={add}>+</button>
            <button>-</button>
            <button>15</button>
        </div>
    );
}

export default connect(
    (state: IRootState) => {
        console.log(">>>>>", state)
        return {
            count: state.test.count
        }
    },
    dispatch => ({
        addCount: (num) => dispatch({type: ADD_COUNT, num} )
    })
)(Login);