将可观察性传递给Angular中的另一个组件

import { Component, OnInit } from '@angular/core';
import { Observable } from 'rxjs';

@Component({
  selector: 'app-source-component',
  template: `
    <button (click)="sendData()">发送数据</button>
  `,
})
export class SourceComponent implements OnInit {
  data$: Observable<string>;

  ngOnInit() {
    // 创建一个可观察对象
    this.data$ = new Observable<string>((observer) => {
      setInterval(() => {
        observer.next('Hello World');
      }, 1000);
    });
  }

  sendData() {
    // 发送数据给目标组件
    this.data$.subscribe((data) => {
      // 通过@Input装饰器传递数据给目标组件
      this.targetComponentData = data;
    });
  }
}

import { Component, Input } from '@angular/core';

@Component({
  selector: 'app-target-component',
  template: `
    <p>接收到的数据：{{ receivedData }}</p>
  `,
})
export class TargetComponent {
  @Input() receivedData: string;
}

<app-source-component></app-source-component>
<app-target-component [receivedData]="targetComponentData"></app-target-component>