How do I access rootScope variable in controller?

Accessing $rootScope in a controller:

1. </li><li>var app = angular. module(‘myApp’, []);</li><li>app. controller(‘myController’,function($scope,$rootScope){</li><li>//We can access $rootScope now.</li><li>});</li><li>

How do I access rootScope on console?

console. log($rootScope); and check the scope object in your chrome console.

What is rootScope broadcast?

$broadcast is used to broadcast a “global” event which can be caught by any listener of that particular scope. The descendant scopes can catch and handle this event by using $scope.

What is rootScope emit?

The $emit() method will send events up through the scope tree’s ancestors. When you bind to an event using the scope. Since the $rootScope has no parent (ancestors), an event, $emit()’d event on the $rootScope, has no where to go. As such, it triggers the $rootScope-bound handlers and then ends its lifecycle.

How do I get rootScope in AngularJS?

3 Answers

1. Access an element that you know is part of the app and wrap it as a jqLite/jQuery element.
2. Get the element’s Scope and then the $rootScope by accessing . scope(). $root .
3. Do whatever you do, but wrap it in $rootScope. $apply() , so Angular will know something is going on and do its magic.

How do you share data between controller and view in angular?

Approach: To share data between the controllers in AngularJS we have two main cases: Share data between parent and child: Here, the sharing of data can be done simply by using controller inheritance as the scope of a child controller inherits from the scope of the parent controller.

How do we pass data and get data using HTTP in angular?

Syntax of AngularJS $http. get Method

1. method – This property is used to define required operator like get or send data.
2. url – We need to send url of http server to perform required operations.
3. data – If we have any parameters to send and get data from request url we will pass it using this parameter.

What is the difference between $scope and $rootScope?

$scope is created with ng-controller while $rootscope is created with ng-app . 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.

Which of the following services is used to create the rootScope during the application bootstrap?

the $injector
During the bootstrap process, the $injector creates the root scope for the application. And during template linking, some directives create new child scopes.

What are services in AngularJS?

AngularJS services are substitutable objects that are wired together using dependency injection (DI). You can use services to organize and share code across your app. AngularJS services are: Lazily instantiated – AngularJS only instantiates a service when an application component depends on it.

What is $rootscope in Angular 2?

$rootScope is the parent of all $scope, each $scope receives a copy of $rootScope data which you can access using $scope itself. If it is just “access in other controller” then you can use angular constants for that, the benefit is; you can add some global settings or other things that you want to access throughout application

How do I change the value of the rootscope variable?

Notice that the rootScope’s variable is set when the module initializes, and then each of the inherited scope’s get their own copy which can be set independently (the change function). Also, the rootScope’s value can be updated too (the changeRs function in myCtrl2)

What is the use of a constant in angular?

If it is just “access in other controller” then you can use angular constants for that, the benefit is; you can add some global settings or other things that you want to access throughout application app.constant (‘appGlobals’, { defaultTemplatePath: ‘/assets/html/template/’, appName: ‘My Awesome App’ });