AngularJS display function is not functional

I am dealing with an HTML button

<button id="postChanges" ng-show="changes.available" data-ng-click="postChanges()">Save</button>

and a controller specifically for this view

myApp.controller('myController', ['$scope', function ($scope) {

    var changes = {
        available : false
    }

    $scope.postChanges = function () {
        console.log('changes before: ' + changes.available);
        if (changes.available) {
            changes.available = false;
        }
        else {
            changes.available = true;
        }
        console.log('changes after: ' + changes.available);
}
}]);

I am struggling to make the button visible when changes.available is true and hide it when it is false, but for some reason, it is not working as expected. I have tried different approaches such as simply using boolean values like changes = true / changes = false, using data-ng-show instead of ng-show, '!' before the value in ng-show ("!changes.available" or "ng-show"=!changes"), but none of these solutions seem to be working. I have checked the changes value in the console and it appears to be correct, so I suspect the issue may lie with the button attribute itself, but I can't figure out why :(

Answer №1

It is necessary to assign Changes.available to $scope ...

var Changes = {
    available: false
};

... in order to make it accessible to the ng-show directive on the button.

$scope.Changes = {
    available: false
};

By making this change, the variable will be visible to the directive.

Answer №2

must be present

$scope.updates = {
    visible: true
}

If not, it will not be detected by the ng-show directive.

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