Is it possible to set a value on a $watched scope property that doesn't trigger the $watch callback?

Question

Is it possible to set count and not trigger the $watch callback?

$scope.count=1;
$scope.$watch('count',function(){...});

Thanks.

Answer 1

You could use setTimeout to wait for Angular's digest cycle to complete and then run your code:

setTimeout(function(){
    $scope.count = 1;
},0)

This way the angular code finishes running, checks for changes and then the property is set without getting Angular involved.

Answer 2

No, but you can add control variable logic within your callback

$scope.$watch('count',function(){
 if ($scope.bypass) return;
 //else ....
});

Answer 3

Kind of. You can use a $watch listener function. So instead of using:

$scope.$watch('count',function(){...});

You'd use:

scope.$watch(
  function() {
    // return the condition you do want evaluated.  Whenever this return value changes
    // from the previous $digest cycle the change handler function below will be called. 
    // The return value will be passed in as `newValue` (and the previous as `oldValue`)
    // in the change handler.
 },
function(newValue,oldValue){...});

Edit: Since it looks like you're trying to watch 2 different variables, another option may be to use watchCollection which will trigger if either changes (so you could have one consolidated handler for both):

$scope.$watchCollection(['count','otherCount'], function(newValues, oldValues) { ...});