Data not saved in the variable?

Question

I have this code

$scope.setContent = function (data) {
        if ($scope.unfiltered_tree == null) {
            $scope.unfiltered_tree = data;
        }
   }

the data saved in the unfiltered_tree for the first time,and when new data comes it's not saved.

Any help on that?

Have you console logged the inside of the if clause to verify that it is being triggered? — Daniel Nalbach, Jan 20 '16 at 15:33
It's not saved because it's not null. Since it's not null the `if` statement fails and doesn't run — Patrick Stephan, Jan 20 '16 at 15:33
Remove the `if` statement, because your `$scope.unfiltered_tree` will be set only if it was `null`. — akmozo, Jan 20 '16 at 15:34
[take a look at this](http://stackoverflow.com/questions/801032/why-is-null-an-object-and-whats-the-difference-between-null-and-undefined) — Vanojx1, Jan 20 '16 at 15:36
I check the console and it's triggered and because it's not null it goes to it but it not saved? — Mohammad AL-Raoosh, Jan 20 '16 at 15:36

score 0 · Accepted Answer · answered Jan 20 '16 at 15:45

I do not fully understand your question. Are you asking how to ALWAYS store the new data in your variable? Just remove the if statement.

$scope.setContent = function (data) {
        $scope.unfiltered_tree = data;
   }

The purpose of the if statement may have been to check if your variable has been intialized or not. In that case you may want to use the following format:

$scope.setContent = function (data) {
        if (!$scope.unfiltered_tree) {
            // Variable has not been initialized yet
            $scope.unfiltered_tree = data;
        } else {
            // Variable has been initialized before, do something else
          }
   }

Data not saved in the variable?

1 Answers1