AngularJS: Encountering [$injector:modulerr] When Migrating to V1.3

In your AngularJS code, you're encountering an error when migrating to version 1.3: Uncaught Error: [$injector:modulerr]. To understand this issue, it's important to note that in AngularJS 1.3 and above, global controller function declaration has been disabled.

For AngularJS to function properly, you need to first create a module and then attach components to that specific module. This ensures proper module encapsulation and dependency injection.

Updated Code:

function Ctrl($scope) {
    $scope.age = 24;
}

angular.module('app', [])
    .controller('Ctrl', ['$scope', Ctrl]);

Additional Notes:

• While angular.config can be used to allow global controller declaration, this is not the recommended approach.
• It's recommended to use AngularJS version 1.6.X, which is a more stable and up-to-date version.