Make pristine Angular form control dirty [duplicate]

javascript angular typescript angular-reactive-forms

Each instance of formControl has markAsDirty() and markAsPristine() methods (inherited from AbstractControl), so, you should be able to run

this.form.controls.foo.markAsPristine()

or better, using reactive forms API:

this.form.get('foo').markAsPristine()

or even

this.form.markAsPristine()

the same may be done with markAsDirty() method

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