We can calculate age using moment js if we have date of birth as given below:
import * as moment from 'moment';
/*Calculate Age*/
public calculateAge(birthdate: any): number {
return moment().diff(birthdate, 'years');
}
/*check Age is less than 18 or not*/
if(this.calculateAge(this.frm.controls.dob.value)<18)
{
this.showMessage('Please check DOB,Age is less than 18.','danger');
}
else
{
//do you code
}
