Angular 4 Form Validators - minLength & maxLength does not work on field type number

Question

I am trying to develop a contact form, I want user to enter phone number values between length 10-12.

Notably same validation is working on Message

Answer 1

If you want to validate a field by multiple validators then, You should try this

phone: ['', Validators.compose([
        Validators.required, 
        Validators.minLength(10),
        Validators.maxLength(12)])
      ])],