How can I simplify form validation?

Question

The code below seems to work pretty well for doing basic required form validation.

The form displays a red Name is required message when the field is dirty

Answer 1

Please use this CSS

.myForm input.ng-invalid.ng-dirty {
    background-color: #FA787E;
}

.myForm input.ng-valid.ng-dirty {
    background-color: #78FA89;
}