Is using $scope.$watch bad manners?

Question

Angular

Heard the opinion that using $scope.$watch is bad form in Angular.js. Is it so? If so, then here's an example:

$scope.modelOne = false;
$scope.modelTwo = 'some string';

The first model is related to the checkbox.
The second one is c input type="text"
If modelOne === true, modelTwo is fully uppercase. If false, then fully convert to lower case. How to do it without $watch, if it's possible to do it at all?

Answer 1

In your case, you should use ng-change ( https://docs.angularjs.org/api/ng/directive/ngChange ).
And $watch is, yes, a bad thing. Better to avoid it.