html中

  <td>{{data.workTime|date :'yyyy-MM-dd'}}</td>

ts中

导入

import { DatePipe } from "@angular/common";

@Component({


  providers: [DatePipe]
})

  constructor(
    private datePipe: DatePipe
  ) { }

调用transform

  formatDate(date) {
    return this.datePipe.transform(date, 'yyyy-MM-dd');
  }