Angular 8:如何设置角度材质日期选择器的时间？

ng add @angular/material

import { MatDatepickerModule } from '@angular/material/datepicker';
import { MatNativeDateModule } from '@angular/material/core';

@NgModule({
  imports: [
    MatDatepickerModule,
    MatNativeDateModule
  ],
  ...
})

<mat-form-field>
  <input matInput [matDatepicker]="picker" placeholder="选择日期">
  <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
  <mat-datepicker #picker></mat-datepicker>
</mat-form-field>

selectedDate: Date;

// 设置默认时间
ngOnInit() {
  this.selectedDate = new Date();
}

<input matInput [matDatepicker]="picker" [(ngModel)]="selectedDate" placeholder="选择日期">