在Angular 2+中从父组件调用子组件方法

<app-child #childComponent></app-child>

import { Component, ViewChild } from '@angular/core';
import { ChildComponent } from './child.component';

@Component({
  selector: 'app-parent',
  template: `
    <app-child #childComponent></app-child>
    <button (click)="callChildMethod()">调用子组件方法</button>
  `
})
export class ParentComponent {
  @ViewChild('childComponent', { static: false }) childComponent: ChildComponent;

  callChildMethod() {
    this.childComponent.childMethod();
  }
}