Angular Observable获取已更新的更改对象，从父组件到子组件

import { Subject } from 'rxjs';

export class ParentComponent {
  private updatedObjectSubject = new Subject<any>();
  updatedObject$ = this.updatedObjectSubject.asObservable();

  // 当更新对象发生变化时，调用此方法
  updateObject(updatedObject: any) {
    this.updatedObjectSubject.next(updatedObject);
  }
}

import { Component, OnInit } from '@angular/core';
import { ParentComponent } from '../parent.component';

@Component({
  selector: 'app-child',
  template: `
    <div>{{ updatedObject }}</div>
  `,
})
export class ChildComponent implements OnInit {
  updatedObject: any;

  constructor(private parentComponent: ParentComponent) {}

  ngOnInit() {
    this.parentComponent.updatedObject$.subscribe((updatedObject) => {
      this.updatedObject = updatedObject;
      // 执行其他操作
    });
  }
}