What Is Ng Touched
Ng-Untouched the Field Has Not Been Touched Yet. Ng-Touched the Field Has Been Touched. Ng-Pristine the Field Has Not Been Modified Yet. Ng-Dirty the Field Has...
ng-untouched The field has not been touched yet. ng-touched The field has been touched. ng-pristine The field has not been modified yet. ng-dirty The field has been modified.
What is form touched?
ng-touched: When the form field is visited AND the field has lost focus. ng-pristine: The form field value is not changed. ng-dirty: The form field value is changed. ng-valid : When all validations of form fields are successful.
When should I call updateValueAndValidity?
When you add or remove a validator at run time, you must call updateValueAndValidity() for the new validation to take effect. Adding a validator that already exists will have no effect. If duplicate validator functions are present in the validators array, only the first instance would be added to a form control.
Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.
