Angular 角度2-将对象从父组件传递到要修改的子组件

我知道将对象从父组件发送到它的子组件就像通过@input发送一样简单

在我的例子中，我需要将一个对象从父对象发送到它的子对象，并在子对象端进行更改，然后立即在父对象端查看此更改

---

事实上，我想把对象的引用发送给子对象，而不是它的值

这里是一个父子通信的示例，我们将在控制台中看到，从父对象传递的对象的子对象的更改值已更改

父组件：

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

@Component({
  selector: 'my-app',
  template: `
    <child [childProp]="parentProp" (childPropChange)="fromChild($event)"></child>
  `
})
export class AppComponent implements OnChanges {
  parentProp = {value1: "value1", value2: "value2"};

  ngOnChanges(c: SimpleChanges) {
    console.log('Parent changes: This doesnt happen often ', c);
  }

  fromChild(val) {
    console.log('Parent: receive from child, ', val.value1);
    console.log('Parent: receive from child, ', val.value2);
    console.log('Parent: receive from child, ', this.parentProp.value1);
    console.log('Parent: receive from child, ', this.parentProp.value2);
  }
}

import { Component, Input, Output, EventEmitter, OnChanges, SimpleChanges } from '@angular/core';

@Component({
  selector: 'child',
  template: `
    <h3>Child Component with {{childProp}}</h3>
    <button (click)="fire()">Talk to parent</button>
  `
})
export class ChildComponent implements OnChanges {
  @Input() childProp;
  @Output() childPropChange = new EventEmitter<{}>();

  ngOnChanges(changes: SimpleChanges) {
    console.log('in child changes with: ', changes);
  }

  fire() {
    this.childProp.value1 = "value1 changed";
    this.childProp.value2 = "value2 changed";
    this.childPropChange.emit(this.childProp);
  }
}

在子组件中，我们更改从父对象接收的对象，并通过以下方式发出值：

this.childProp.value1 = "value1 changed";
this.childProp.value2 = "value2 changed";
this.childPropChange.emit(this.childProp);

您可以在控制台中看到此结果：

Parent: receive from child,  value1 changed
Parent: receive from child,  value2 changed
Parent: receive from child,  value1 changed
Parent: receive from child,  value2 changed

---

将对象作为

@输入传递给子对象。在子对象中对其所做的任何修改也将应用于父对象中的对象（只要“对象”不是数字、字符串或布尔值）。我已经尝试过了，但子对象的修改不会在父对象上对其进行修改。对象不应该是数字、字符串或布尔值是什么意思？请在问题中添加相关代码：如何定义对象，如何将其传递给子组件，以及如何在子组件中修改它。
Parent: receive from child,  value1 changed
Parent: receive from child,  value2 changed
Parent: receive from child,  value1 changed
Parent: receive from child,  value2 changed