What are scope and scope inheritance?

Scope : Click for live demo

The scope is an object of JavaScript. The scope is provide the connection between controller to view. The model data contain by the scope and all the model data access by the $scope. i.e.

//assign value in scope and access it.

var parentApp = angular.module("myParentApp", []);

 parentApp.controller("MyParentController", ['$scope', function ($scope) {

    $scope.name = 'Anil Singh';

    $scope.Age = 30;

  }

}]);

//assign value in scope and access it.
var parentApp = angular.module("myParentApp", []);

 parentApp.controller("MyParentController", ['$scope', function ($scope) {
    $scope.name = 'Anil Singh';
    $scope.Age = 30;
  }
}]);

Scope Inheritance :

The Scope Inheritance work like JavaScript Inheritance. The parent scope and child scope attached with taggers.

By default, The child scope prototype inherit from the parent scope that means the child controller will inherit the parent controller and the scope can be nested and have the limit access to the properties. i.e.

var parentApp = angular.module("myParentApp", []);

parentApp.controller("MyChild1Controller", ['$scope', function ($scope) {

    $scope.child1Name = 'Child-1';

    $scope.Age = 10;

    $scope.gender = 'M';

  }

}]);

parentApp.controller("MyChild2Controller", ['$scope', function ($scope) {

    $scope.child2Name = 'Child-2';

    $scope.Age = 4;

    $scope.gender = 'F';

  }

}]);

var parentApp = angular.module("myParentApp", []);

parentApp.controller("MyChild1Controller", ['$scope', function ($scope) {
    $scope.child1Name = 'Child-1';
    $scope.Age = 10;
    $scope.gender = 'M';
  }
}]);

parentApp.controller("MyChild2Controller", ['$scope', function ($scope) {
    $scope.child2Name = 'Child-2';
    $scope.Age = 4;
    $scope.gender = 'F';
  }
}]);

The live example of scope with Inheritance

<html>

<head>

  <title>What is Scope and Scope Inheritance?</title>

  <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"></script>

  <script>

    var parentApp = angular.module("myParentApp", []);

    parentApp.controller("MyParentController", function($scope) {

      $scope.ParentName = 'Parent';

      $scope.Age = 50;

    });

    parentApp.controller("MyChild1Controller", function($scope) {

      $scope.child1Name = 'Child-1';

      $scope.Age = 10;

      $scope.gender = 'M';

    });

    parentApp.controller("MyChild2Controller", function($scope) {

      $scope.child2Name = 'Child-2';

      $scope.Age = 4;

      $scope.gender = 'F';

    });

  </script>

</head>

<body ng-app="myParentApp">

  <h2>Scope Inheritance?</h2>

  <div ng-controller="MyParentController">

    <p>{{ParentName}}

      <br/>{{Age}}

      <div ng-controller="MyChild1Controller">

        <p>{{child1Name}}

          <br/>{{Age}}</p>

      </div>

      <div ng-controller="MyChild2Controller">

        <p>{{child2Name}}

          <br/>{{Age}}</p>

      </div>

  </div>

</body>

</html>

<html>

<head>
  <title>What is Scope and Scope Inheritance?</title>
  <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.15/angular.min.js"></script>
  <script>
    var parentApp = angular.module("myParentApp", []);

    parentApp.controller("MyParentController", function($scope) {
      $scope.ParentName = 'Parent';
      $scope.Age = 50;
    });

    parentApp.controller("MyChild1Controller", function($scope) {
      $scope.child1Name = 'Child-1';
      $scope.Age = 10;
      $scope.gender = 'M';
    });

    parentApp.controller("MyChild2Controller", function($scope) {
      $scope.child2Name = 'Child-2';
      $scope.Age = 4;
      $scope.gender = 'F';
    });
  </script>
</head>

<body ng-app="myParentApp">
  <h2>Scope Inheritance?</h2>
  <div ng-controller="MyParentController">
    <p>{{ParentName}}
      <br/>{{Age}}
      <div ng-controller="MyChild1Controller">
        <p>{{child1Name}}
          <br/>{{Age}}</p>
      </div>
      <div ng-controller="MyChild2Controller">
        <p>{{child2Name}}
          <br/>{{Age}}</p>
      </div>
  </div>
</body>

</html>

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