AngularJS Scopes

  • The scope is an object that refers to the application model.
  • It is used to specified the binding part (expression) between the HTML and the controller.
  • It plays a role of linking controller with the views.
  • It is accessible for both the view and the controller.
  • Scopes are organized in hierarchical structure which imitate the DOM structure of the applications.
  • Scopes can watch binding(expression) and propagate events.
  • Scopes can be nested to limit access to the properties of application component, while giving access to shared model properties.
  • In AngularJS, the nested scopes are either child scope or isolated scopes.
  • The child scope is inheriting properties from the base or parent scope.
  • An isolated scopes does not prototypically (“child scope”) inherit from its parent scope.

Syntax for scope in Angular JS:

myApp.controller('myController', function($scope) {
    $scope.myVariable = "value";

Sample coding for scope in AngularJS:

 Tryit<!DOCTYPE html>
        <title>Wikitechy AngularJS Tutorials</title>
        <script src="
        angular.min.js"> </script>
        <h2>Wikitechy scope in AngularJS</h2>
        <div ng-app="myApp" ng-controller="scopeCtrl">
        {{ msg }}
            var app = angular.module('myApp', [ ]);
            app.controller('scopeCtrl', function($scope) {
            $scope.msg = "Welcome To AngularJS Tutorials";


  • The msg data been defined for our AngularJS Application.
msg = "Welcome To AngularJS Tutorials";


  • Controller logic for the AngularJS application.
app.controller('scopeCtrl', function($scope)
        $scope.msg = "Welcome To AngularJS Tutorials";


  • Viewable HTML contents in AngularJS Application.
<div ng-app="myApp" ng-controller="scopeCtrl">
    {{ msg }}

Code Explanation for scope in AngularJS:

Code Explanation for Scope In AngularJS

  1. AngularJS is distributed as a JavaScript file, and can be added to a HTML page with a <script> tag.
  2. The AngularJS application is defined by ng-app="myApp". The application runs inside the <div> tag. It’s also used to define a <div> tag as a root element.
  3. The ng-controller=”scopeCtrl” is an AngularJS directive. It is used to define a controller name as “scopeCtrl”.
  4. {{ msg }} is a used to bind the controller value by using the scope object.
  5. angular.module function is used to create a module. Here has passed an empty array to it.
  6. Here we have declared a controller scopeCtrl module using apps.controller() function.
  7. The value of the controller modules is stored in scope object. In AngularJS, $scope is passed as first argument to apps.controller during its constructor definition.
  8. Here we have set the value of $scope.msg as “Welcome To AngularJS Tutorials” which are to be used to display the {{ msg }} value in the HTML <div> element.

Sample output:

Sample Output for Scope In Angularjs

  1. The output displays a message of a string {{ msg }} by using a $scope object

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