Set focus on first invalid input in AngularJs form

Question

I\'ve read several articles and StackOverflow questions relating to the setting of focus in AngularJs.

Unfortunately all the examples that I have read assume that th

Answer 1

just one line:

if($scope.formName.$valid){
    //submit
}
else{
    $scope.formName.$error.required[0].$$element.focus();
}