ionic datetime open method code example

Example 1: ion-datetime open programmatically

<ion-datetime #dateTime style="display:none" displayFormat="h:mm A" pickerFormat="h mm A" [(ngModel)]="startTime"></ion-datetime>
<button (click)="openStart()"></button>
and then in your code
...
//first create a reference to the datetime control:
@ViewChild('dateTime') sTime;
...
//then add your event code: 
openStart()
{
	this.sTime.open();
}

Example 2: ionic datetime

<ion-item>
  <ion-label>MMMM</ion-label>
  <ion-datetime displayFormat="MMMM" value="2012-12-15T13:47:20.789"></ion-datetime>
</ion-item>

<ion-item>
  <ion-label>MM DD YY</ion-label>
  <ion-datetime displayFormat="MM DD YY" placeholder="Select Date"></ion-datetime>
</ion-item>

<ion-item>
  <ion-label>YYYY</ion-label>
  <ion-datetime [pickerOptions]="customPickerOptions" placeholder="Custom Options" displayFormat="YYYY" min="1981" max="2002"></ion-datetime>
</ion-item>

<ion-item>
  <ion-label position="stacked">MMMM YY</ion-label>
  <ion-datetime displayFormat="MMMM YY" min="1989-06-04" max="2004-08-23" value="1994-12-15T13:47:20.789"></ion-datetime>
</ion-item>

<ion-item>
  <ion-label position="floating">MM/DD/YYYY</ion-label>
  <ion-datetime displayFormat="MM/DD/YYYY" min="1994-03-14" max="2012-12-09" value="2002-09-23T15:03:46.789"></ion-datetime>
</ion-item>

<ion-item>
  <ion-label position="floating">MM/DD/YYYY</ion-label>
  <ion-datetime displayFormat="MM/DD/YYYY" min="1994-03-14" max="2012-12-09"></ion-datetime>
</ion-item>