How to change Mat-Datepicker date format to DD/MM/YYYY in simplest way?

Question

I\'m setting up a mat-datepicker for DOB and traditionally the display format is MM/DD/YYYY,I need to change it to DD/MM/YYYY with less coding

I tried format tag in mat

Answer 1

For me, the best approach was to inject MAT_DATE_FORMATS to my component, which then dynamically determines what should the display format look like.

Setup in component:

  constructor(@Inject(MAT_DATE_FORMATS) private dateFormats) { }

  ngOnInit() {
    if (this.data.inputType === InputDateDialogRangeType.MonthAndYearOnly)
      this.dateFormats.display.dateInput = "MMMM YYYY";
    else if (this.data.inputType === InputDateDialogRangeType.YearOnly)
      this.dateFormats.display.dateInput = "YYYY";           
  }

Setup in module:

 providers: [
    { provide: MAT_DATE_FORMATS, useValue: MY_DATE_FORMAT },
    {
      provide: DateAdapter,
      useClass: MomentDateAdapter,
      deps: [MAT_DATE_LOCALE, MAT_MOMENT_DATE_ADAPTER_OPTIONS]
    },
    { provide: MAT_MOMENT_DATE_ADAPTER_OPTIONS, useValue: { useUtc: true } },

export const MY_DATE_FORMAT = {
  display: {
    dateInput: 'DD MMM YYYY',
    monthYearLabel: 'MMM YYYY',
    dateA11yLabel: 'LL',
    monthYearA11yLabel: 'MMMM YYYY',
  },
};