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NgRx是一個(gè)用于Angular應(yīng)用程序的狀態(tài)管理庫,它基于Redux設(shè)計(jì)模式。通過NgRx可以輕松地管理應(yīng)用程序的狀態(tài),包括數(shù)據(jù)的獲取、存儲(chǔ)和更新。以下是如何通過NgRx進(jìn)行狀態(tài)管理的步驟:
npm install @ngrx/store @ngrx/effects @ngrx/entity @ngrx/router-store @ngrx/store-devtools @ngrx/schematics --save
import { createAction, props } from '@ngrx/store';
export const increment = createAction('[Counter Component] Increment');
export const decrement = createAction('[Counter Component] Decrement');
export const reset = createAction('[Counter Component] Reset');
import { createReducer, on } from '@ngrx/store';
import { increment, decrement, reset } from './counter.actions';
export const initialState = 0;
export const counterReducer = createReducer(
initialState,
on(increment, state => state + 1),
on(decrement, state => state - 1),
on(reset, state => 0)
);
import { StoreModule } from '@ngrx/store';
import { counterReducer } from './counter.reducer';
@NgModule({
imports: [
StoreModule.forRoot({ count: counterReducer })
]
})
export class AppModule {}
import { Store } from '@ngrx/store';
import { increment, decrement, reset } from './counter.actions';
export class CounterComponent {
constructor(private store: Store<{ count: number }>) {}
increment() {
this.store.dispatch(increment());
}
decrement() {
this.store.dispatch(decrement());
}
reset() {
this.store.dispatch(reset());
}
}
通過以上步驟,就可以使用NgRx進(jìn)行狀態(tài)管理了。NgRx提供了一種可預(yù)測(cè)性、可維護(hù)性和可測(cè)試性的狀態(tài)管理解決方案,讓應(yīng)用程序的狀態(tài)管理變得更加簡(jiǎn)單和高效。
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