angular8 + redux 管理状态

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。

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angular8 + redux 管理状态

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