相关疑难解决方法(0)

我在控制器中看到$ scope有$ root,这是什么？它与$ rootScope的不同之处在于可以在控制器中注入？

我希望子组件访问共享服务并在将子组件注入主组件之后获取数据。我想让sharedservice(rootscope)的数据直接把数据放到mainComponents HTML中，就像这里。

主组件.ts

import { Component } from '@angular/core';
import {ChildComponent} from './child';
import {AppServiceService} from './app-service.service';

@Component({
  moduleId: module.id,

  selector: 'rootscope-app',

  templateUrl: 'rootscope.component.html',

  styleUrls: ['rootscope.component.css'],

  directives:[ChildComponent]

})

export class RootscopeAppComponent {

  title = 'rootscope works!';

  display:any;

  constructor(appServiceService:AppServiceService){  

    this.display=appServiceService.getter();

  }
}

共享服务.ts

import { Injectable} from '@angular/core';


@Injectable()

export class AppServiceService {

  ser = "hello i am from service";

  public data: any;

  constructor() {

  }

  settter(data: any) {

    this.data = data;

  }

  getter() {

    return this.data; …