How to $watch multiple variables?

Question

I do have two $scope variables. They are called $scope.image and $scope.titleimage.

Basically the store the same type of contents.

Answer 1

The correct answer was found here:

https://docs.angularjs.org/api/ng/type/$rootScope.Scope#$watchCollection

"for arrays, this implies watching the array items; for object maps, this implies watching the properties"

Example:

$scope.$watchCollection(function () {
    return {t : ctrl.time, d : ctrl.date};
}, function(value) {
    ctrl.updateDateTime();
});