AngularJS application failing to initialize without a module being included

I'm feeling a bit lost when it comes to angularjs and I have a question about why my angularjs app is refusing to bootstrap without creating a module, even though egghead.io and other tutorials seem to suggest otherwise. Here's a snippet of my HTML template:

<!DOCTYPE html>
<html ng-app>

  <head>
    <script data-require="angular.js@*" data-semver="1.4.0-beta.1" src="https://code.angularjs.org/1.4.0-beta.1/angular.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
    <script src="controller.js"></script>
  </head>

  <body>
    <div ng-controller="HelloController">
      <p>{{greeting.text}}, World</p>
    </div>
  </body>
</html>

Then there's the controller.js file which doesn't seem to work:

function HelloController($scope) {
$scope.greeting = { text: 'Hello' };
}

However, when I define a module [naming ng-app as 'hello'] and create a controller, it magically works:

angular.module('hello', []).controller('HelloController', function($scope) {
  $scope.greeting = { text: 'Hello' };
});

I'm just struggling to understand the reason behind this behavior. Any insights are greatly appreciated.

Answer №1

Angular 1.3 has introduced a significant breaking change that affects the use of global functions as controllers. For a comprehensive list of these breaking changes, please refer to this link.

To address this issue, the allowGlobals feature can be utilized to override the default behavior. However, it is not advisable to rely on this workaround. Additional information on allowGlobals can be found here.

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