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。

 

posted @ 2019-09-01 17:34  monkey-K  阅读(1258)  评论(0)  编辑  收藏  举报