The function you are trying to call in AngularJS is not a valid

I am currently experiencing an issue involving the population of textareas with text. Interestingly, when I step through with the debugger, everything functions properly. However, during normal execution, the fields are only populated with data upon the second loading. This observation leads me to suspect that the problem lies in how the page is being loaded. I am attempting to delay the execution of my method which populates the fields using callbacks; however, I am still grappling with this programming technique in JS, specifically AngularJS.

Every attempt at implementing this has resulted in the Callback is not a function error, as seen in this snippet:

 $scope.StudyAndUnderstandingContent = []
$http.post('url', {stepNumber: currentStep.currentstep})
.then(function success(response, getCallback) {
    $scope.StudyAndUnderstandingContent = response.data.step;
    getCallback();
});

Below is my callback function for reference:

function getCallback()
{
    $http.post('url2', getData)
    .then(function(response)
    {
        angular.forEach(response.data.answer, function(value, key)
        {
            $scope.answers.push(response.data.answer[key]); 
        });

        $scope.textBoxes = [];
        angular.forEach(angular.element($(".inline-q")), function(value, key)
        {
            $scope.textBoxes.push(value);
            $scope.textBoxes[key].value = $scope.answers[key].answer;
        });
    });
}

Despite consulting other questions and troubleshooting on my own, I have yet to make any progress in resolving the issue. Any assistance would be greatly appreciated.

Answer №1

It is unnecessary to include a callback function in the success parameter.

$scope.StudyAndUnderstandingContent = []
$http.post('url', {stepNumber: currentStep.currentstep})
.then(function success(response) {
    $scope.StudyAndUnderstandingContent = response.data.step;
    getCallback();
});

Refer to the documentation for $http

Answer №2

    $http.post('api/url', {currentStep: currentStep}).then(

        function handleSuccess(data) {
          $scope.learningContent = data.response.step;
          finishRequest();
        },
        function handleError (data) {
         // manage error
        }
      );

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