How use array in Angular JS?

Question

I have initializated array in Angular JS:

$scope.formData.universitySelected = [];

I try to fill array in loop:

 angular.forEach($scope.formData.university, function (value, key) {
    if (typeof value === 'object') {
         $scope.formData.universitySelected[key].id = value.IdEducation;
    } else {
        $scope.formData.universitySelected[key].selected = value;
    }
});

But I get error:

Cannot set property 'id' of undefined

hansmaad · Accepted Answer · 2015-08-29 10:51:29Z

2

You should create an object before using it.

angular.forEach($scope.formData.university, function (value, key) {
   $scope.formData.universitySelected[key] = $scope.formData.universitySelected[key] || {};
   if (typeof value === 'object') {
      $scope.formData.universitySelected[key].id = value.IdEducation;
   } else {
      $scope.formData.universitySelected[key].selected = value;
   }
});

answered Aug 29, 2015 at 10:51

hansmaad

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Comments

Pankaj Parkar · Accepted Answer · 2015-08-29 10:50:55Z

1

I think you need to define that object first then add value to in it.

Code

angular.forEach($scope.formData.university, function (value, key) {
    if (typeof value === 'object') {
         $scope.formData.universitySelected[key] = {id : value.IdEducation};
    } else {
        $scope.formData.universitySelected[key] = {selected : value.IdEducation};
    }
});

answered Aug 29, 2015 at 10:50

Pankaj Parkar

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2 Comments

Robin James Kerrison Over a year ago

If $scope.formData.universitySelected[key] already exists, your code will remove any other properties.

Pankaj Parkar Over a year ago

@RobinJamesKerrison yes I know..before editing my answer..@hansmaad already added his answer..

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