Unusual behavior observed in AngularJs local variables

This code snippet is from the controller:

cat1=[];

$.getJSON('categories/1/', function(data) {
    cat1 = data; //this returns a JSON object
});
//cat2..4 are also JSONs
$scope.pictures=[cat1,cat2,cat3,cat4,cat5];

The issue here seems to be that cat1=[] and cat1=data might not be treated as the same variable, leading to pictures[cat1] always returning an empty array.

Could there be something incorrect in my code logic?

Answer №1

The reason why logging the result of $.getJSON may not work is because it is an asynchronous request that is still processing. Additionally, it is recommended to use Angular's built-in $http service instead of jQuery when working with Angular. This ensures that a $digest cycle is triggered and everything stays in sync:

$http.get("categories/1/").success(function(data) {
    cat1 = data; // returns JSON data
    $scope.pictures=[cat1,cat2,cat3,cat4,cat5];
});

Don't forget to inject $http as a dependency in your controller:

app.controller("myCtrl", ["$scope", "$http", function($scope, $http) {

}]);

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