angular8 + redux 学习分享一
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。
