Validation pattern for date in DD/MM/YYYY format using angular2

Question

How to add validation pattern for Date in DD/MM/YYYY format using angular2 Validator.pattern.

I have the \"required\" validator in place. Cannot find one for date pa

Answer 1

You can also create a service( not mandatory, i.e the following could easily be changed to a regular function ) as follows:

import { Injectable } from '@angular/core';
import { FormControl } from '@angular/forms';

    interface Validator {
      (c: T): { [error: string]: any };
    }

    @Injectable()
    export class DateValidatorClass {

      constructor() { }
      dateValidator(c: FormControl) {

        const dateRegEx = new RegExp(yourRegExInHere);;

        return c.value.test(dateRegEx) ? null : {
          dateValidator: {
            valid: false
          }
    };
  }
}