如何在angular4中使用mddate拾取器将mindate设置为当前日期？

npm install --save @angular/material @angular/cdk

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

@NgModule({
  imports: [
    // 其他模块
    MatDatepickerModule,
    MatNativeDateModule
  ],
  // 其他配置
})
export class AppModule { }

import { Component } from '@angular/core';

@Component({
  selector: 'my-datepicker',
  template: `
    <mat-form-field>
      <input matInput [matDatepicker]="picker" [min]="minDate" placeholder="Choose a date">
      <mat-datepicker-toggle matSuffix [for]="picker"></mat-datepicker-toggle>
      <mat-datepicker #picker></mat-datepicker>
    </mat-form-field>
  `
})
export class DatepickerComponent {
  minDate = new Date();
}

@import '@angular/material/prebuilt-themes/indigo-pink.css';