angular使用服务的步骤

1:创建服务

ng g service services/storage

2:引入服务

app.module.ts 里面引入创建的服务:

import { StorageService } from './services/storage.service';

NgModule 里面的 providers 里面依赖注入服务

@NgModule({

declarations: [AppComponent,HeaderComponent,

FooterComponent,NewsComponent,TodolistComponent

],

imports: [BrowserModule,FormsModule

],

providers: [StorageService],

bootstrap: [AppComponent]})

export class AppModule { }

 

3:使用的页面引入服务,注册服务

import { StorageService } from '../../services/storage.service';

constructor(private storage: StorageService) {

}

 











你可能感兴趣的:(angular)