How to check for changes in form in Angular 2 using

Question

I have a form with few data fields and two buttons.I want to enable the buttons only if the user makes some changes to the form. I have tried using:

this.for         


        

Answer 1

first of all use "NgForm".

Then on the "onSubmit()" function do this -

onSubmit(myForm: NgForm): void {
  let formControls = myForm.controls;
  if(formControls.firstName.dirty) {
    console.log("It's dirty");
  }
  else {
    console.log("not dirty");
  }
} 

It will definitely work. You can print the whole "myForm" and see for yourselves what all options are available to use.