AngularJS

1.global variable

$rootscope VS $scope

The main difference is the availability of the property assigned with the object. A property assigned with $scope cannot be used outside the controller in which it is defined whereas a property assigned with $rootScope can be used anywhere.

$rootScope” is a parent object of all “$scope” angular objects created in a web page. $scope is created with ng-controller while $rootscope is created with ng-app .

2. scope VS controller

3. the usage of scope

The scope is the binding part between the HTML (view) and the JavaScript (controller). The scope is an object with the available properties and methods. The scope is available for both the view and the controller.