Angular 父组件给子组件传值

父组件

export class AppComponent {
  title = 'my-App';
  sendchildMsg = '这是给子元素的数据，希望在子组件中显示';
}      

父组件视图

<app-child [item]="sendchildMsg"></app-child>      

配置子组件：导入Input,导入item

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

@Component({
  selector: 'app-child',
  templateUrl: './child.component.html',
  styleUrls: ['./child.component.scss']
})
export class ChildComponent implements OnInit {
  @Input() item: any;
  constructor() { }

  ngOnInit(): void {
  }

}      

h1>{{item}}</h1>