FormControl

FormControl tracks the value and validation state of an individual form field.

• valid/invalid: Passes validators?
• pristine/dirty: Has user interacted?
• touched/untouched: Has user blurred?
• pending: Async validator running?

const email = new FormControl('', [Validators.required, Validators.email]);
console.log(email.value);    // ''
console.log(email.valid);    // false

FormControl is the building block of reactive forms.”