How do you define a function in AngularJS?
In AngularJS, when you define a function as a variable, it is known as a Method.
- Data in this way pass from the controller to the scope, and then the data passes back and forth from the scope to the view.
- The scope is used to expose the model to the view.
- Controllers should not ideally be used for manipulating the DOM.
What is Ctrl in AngularJS?
$ctrl is the view model object in your controller. This $ctrl is a name you choose (vm is another most common name), if you check your code you can see the definition as $ctrl = this; , so basically its the this keyword of the controller function. So now if you are using $ctrl.
What is $scope in AngularJS?
The $scope in an AngularJS is a built-in object, which contains application data and methods. You can create properties to a $scope object inside a controller function and assign a value or function to it. It transfers data from the controller to view and vice-versa.
What is $injector in AngularJS?
$injector is used to retrieve object instances as defined by provider, instantiate types, invoke methods, and load modules. The following always holds true: var $injector = angular.
What is a service 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 the module in AngularJS?
A module in AngularJS is a container of the different parts of an application such as controller, service, filters, directives, factories etc. It supports separation of concern using modules.
What are components in AngularJS?
In AngularJS, a Component is a special kind of directive that uses a simpler configuration which is suitable for a component-based application structure. This makes it easier to write an app in a way that’s similar to using Web Components or using the new Angular’s style of application architecture.
What is service in AngularJS?
What is NG model in AngularJS?
ngModel is a directive which binds input, select and textarea, and stores the required user value in a variable and we can use that variable whenever we require that value. It also is used during validations in a form.
What are the filters in AngularJS?
AngularJS Filters
| Filter Name | Description |
|---|---|
| Lowercase | Converts string to lower case. |
| Filter | Filters an array based on specified criteria and returns new array. |
| orderBy | Sorts an array based on specified predicate expression. |
| Json | Converts JavaScript object into JSON string |
What is service in AngularJS with example?
What is .config in AngularJS?
Configuration block is executed during bootstrap process which is before any controller or directive code. Once bootstrap is done, configuration blocks can’t execute. Once boostrap is done, providers aren’t injectable any more. So property or method on providers can’t be called after boostrap phase.
What is AngularJS and how does it work?
AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly. AngularJS’s data binding and dependency injection eliminate much of the code you would otherwise have to write.
What are the must know things about AngularJS?
Another interesting thing you should know about the AngularJS framework is that it supports caching and several other processes . This in turn considerably reduces the burden of server CPUs. Server CPUs will start to perform incredibly well, as it responds only to the API calls and serves just the static files.
What are the disadvantages of AngularJS?
Disadvantages of AngularJS. Though AngularJS comes with a lot of merits, here are some points of concern: 1. Not secure : Being JavaScript only framework, application written in AngularJS are not safe. Server side authentication and authorization is must to keep an application secure.
What is the difference between AngularJS and JavaScript?
JavaScript vs AngularJS are the two different web technologies used for developing web applications. JavaScript is a programming language whereas AngularJS is an open source framework and based on MVC architecture. JavaScript is mainly written for websites to run in the client’s browser.