angular 服务 基本用法

创建个服务
ng g service services/search

全局引入并配置服务
import {SearchService} from './services/search.service'
  providers: [SearchService],

在组件中，使用服务
import {SearchService} from '../../services/search.service'
sname = ''

    constructor(public store: SearchService) {
      this.sname = this.store.systemName
    }

  
{{sname}}