Troubleshooting undefined results when dynamically loading JSON data with $scope values in AngularJS

My input field is connected to the ng-model as shown below.

<div ng-app="myApp" ng-controller="GlobalCtrl">
    <input type="text" ng-model="FirstName">
        {{FirstName}}
</div>

In my controller, console.log $scope.FirstName shows me the correct values I enter in the view.

However, when I try to place the $scope data into a structure resembling JSON, it returns as undefined.

myApp.controller('GlobalCtrl', function($scope) {

    $scope.loadedata = {"asd":$scope.FirstName};
    console.log($scope.FirstName); //this works fine
    console.log($scope.loadedata); //but this comes out as undefined.
});

Currently, $scope.loadedata) is showing up as undefined. What could be causing this? Am I doing something incorrectly?

Answer №1

Your code snippet has a couple of issues that need addressing. It appears that you are encountering an error when trying to render the undefined value of FirstName in the input bar of your DOM. For guidance on properly utilizing inputs and establishing a two-way binding template-controller relationship, refer to this helpful demo: https://material.angularjs.org/latest/demo/input

Additionally, it's unclear where you have placed the console.log() function in your code. Are you calling it after the controller is invoked?

Answer №2

My opinion:

<div ng-app="myApp" ng-controller="GlobalCtrl">
<input type="text" ng-model="req.FirstName">
    {{req.FirstName}}
</div>

This is my Controller :

myApp.controller('GlobalCtrl', function($scope) {
$scope.req = {};
console.log(JSON.stringify($scope.req));
});

After extensive research, I have discovered that it is more effective to avoid serialization and use ng-model instead. This method works perfectly fine.

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