angular8 + redux 管理状态

Posted 2022-09-19 monkey-k

1. angular8.1.1 ----- package.json

  "name": "angular-demo",
  "version": "0.0.0",
  "scripts": 
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  ,
  "private": true,
  "dependencies": 
    "@angular/animations": "~8.1.1",
    "@angular/common": "~8.1.1",
    "@angular/compiler": "~8.1.1",
    "@angular/core": "~8.1.1",
    "@angular/forms": "~8.1.1",
    "@angular/platform-browser": "~8.1.1",
    "@angular/platform-browser-dynamic": "~8.1.1",
    "@angular/router": "~8.1.1",
    "redux": "^4.0.4",
    "rxjs": "~6.4.0",
    "tslib": "^1.9.0",
    "zone.js": "~0.9.1"
  ,
  "devDependencies": 
    "@angular-devkit/build-angular": "~0.801.1",
    "@angular/cli": "~8.1.1",
    "@angular/compiler-cli": "~8.1.1",
    "@angular/language-service": "~8.1.1",
    "@types/node": "~8.9.4",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "codelyzer": "^5.0.0",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.15.0",
    "typescript": "~3.4.3"
  

2. 目录结构

3. sate.js 导出default sate

export const basketballNums = [

   

        id: ‘35‘,

        name: "杜兰特",

        age: ‘30‘,

        position: ‘前锋‘

   

] 

4. action.js

action作为触发state 改变的唯一通道，type字段必须，payload字段传递参数，按需求可选。

export const ADD_NUMS = ‘ADD_NUMS‘

export const UPDATE_NUMS = ‘UPDATE_NUMS‘

export const DELETE_NUMS = ‘DELETE_NUMS‘

export function addItems(numObj)

    return

        type: ‘ADD_NUMS‘,

        payload: numObj

   

5. reducer.js -- 构造以action条件（type）为依据的函数，返回 state. --即制造state

import * as basketballActions from ‘../actions/bascketballActions‘

import basketballNums from ‘../state/basketballState‘

export function basketballReducer(state = basketballNums, action)

    switch(action.type)

        case basketballActions.ADD_NUMS:

            return [...state, action.payload]

       

       

        default:

            return state

   

6. index.js -- 整合所有reducer

combineReducers -- 整合整合所有reducer

createStore -- 创建store, strore是一个 observalbal 对象，提供以下方法：

• store.dispatch()
• store.subscribe()
• store.getState()

 

 

import createStore, combineReducers from ‘redux‘

import basketballReducer from ‘./reducers/basketballReducers‘

import addItems from ‘./actions/bascketballActions‘

export const allReducers = combineReducers(

    basketballState: basketballReducer

)

export const store = createStore(allReducers)

 

let unsubscribe = store.subscribe(()=>

    console.log(store.getState())

)

store.dispatch(addItems(

    id: ‘0‘,

    name: ‘威少‘,

    position: ‘后卫‘,

    age: ‘30‘

))

unsubscribe()

 

7. angular组件中怎么引用？

 

import Component from ‘@angular/core‘;

import store from ‘../store‘

import addItems from ‘../store/actions/bascketballActions‘

@Component(

  selector: ‘app-root‘,

  templateUrl: ‘./app.component.html‘,

  styleUrls: [‘./app.component.css‘]

)

export class AppComponent

  title = ‘angular-demo‘;

  constructor()

    console.log(store, ‘ss‘)

    store.dispatch(addItems(

            id: ‘11‘,

            name: ‘欧文‘,

            position: ‘后卫‘,

            age: ‘30‘

        )

    )

    console.log(store.getState(), ‘sss‘)

 

以上7步， angular中就能用redux管理状态了。