In this blog we will discuss about how to set up AngularJS library to be used in web application development. We will also briefly study the directory structure and its contents.

When you open the link https://angularjs.org/, you will see there are two options to download AngularJS library −

View on GitHub − Click on this button to go to GitHub and get all of the latest scripts.
Download AngularJS 1 − Or click on this button, a screen as below would be seen −

This screen gives various options of using Angular JS as follows −
- Downloading and hosting files locally
  - There are two different options legacy and latest. The names itself are self descriptive. legacy has version less than 1.2.x and latest has 1.5.x version.
  - We can also go with the minified, uncompressed or zipped version.
- CDN access − You also have access to a CDN. The CDN will give you access around the world to regional data centers that in this case, Google host. This means using CDN moves the responsibility of hosting files from your own servers to a series of external ones. This also offers an advantage that if the visitor to your webpage has already downloaded a copy of AngularJS from the same CDN, it won’t have to be re-downloaded.

Try the new angularJS 2 − Click on this button to download Angular JS beta 2 version.This version is very fast, mobile supported and flexible compare to legacy and latest of AngularJS 1

We are using the CDN versions of the library throughout this tutorial.

Example

Now let us write a simple example using AngularJS library. Let us create an HTML file myfirstexample.html as below −

<!doctype html>

<html>

<head>

</head>

<h2>Welcome {{helloTo.title}} to the world of Tecklearn!</h2>

</div>

angular.module(“myapp”, [])

.controller(“HelloController”, function($scope) {

$scope.helloTo = {};

$scope.helloTo.title = “AngularJS”;

});

</script>

</body>

</html>

Following sections describe the above code in detail −

Include AngularJS

We have included the AngularJS JavaScript file in the HTML page so we can use AngularJS −

<head>

</head>

If you want to update into latest version of Angular JS, use the following script source or else Check the latest version of AngularJS on their official website.

<head>

</head>

Point to AngularJS app

Next we tell what part of the HTML contains the AngularJS app. This done by adding the ng-app attribute to the root HTML element of the AngularJS app. You can either add it to html element or body element as shown below −

</body>

View

The view is this part −

<h2>Welcome {{helloTo.title}} to the world of Tecklearn!</h2>

</div>

ng-controller tells AngularJS what controller to use with this view. helloTo.title tells AngularJS to write the “model” value named helloTo.title to the HTML at this location.

Controller

The controller part is −

angular.module(“myapp”, [])

.controller(“HelloController”, function($scope) {

$scope.helloTo = {};

$scope.helloTo.title = “AngularJS”;

});

</script>

This code registers a controller function named HelloController in the angular module named myapp. We will study more about modules and controllers in their respective chapters. The controller function is registered in angular via the angular.module(…).controller(…) function call.

The $scope parameter passed to the controller function is the model. The controller function adds a helloTo JavaScript object, and in that object it adds a title field.

Execution

Save the above code as myfirstexample.html and open it in any browser. You will see an output as below −

Welcome AngularJS to the world of Tecklearn!

When the page is loaded in the browser, following things happen −

HTML document is loaded into the browser, and evaluated by the browser. AngularJS JavaScript file is loaded, the angular global object is created. Next, JavaScript which registers controller functions is executed.
Next AngularJS scans through the HTML to look for AngularJS apps and views. Once view is located, it connects that view to the corresponding controller function.
Next, AngularJS executes the controller functions. It then renders the views with data from the model populated by the controller. The page is now ready.

So, this brings us to the end of blog. This Tecklearn ‘How to Setup Angular JS Environment’ blog helps you with commonly asked questions if you are looking out for a job in Angular JS and Front-End Development. If you wish to learn Angular JS and build a career in Front-End Development domain, then check out our interactive, Angular JS Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

https://www.tecklearn.com/course/angular-js-training/

Angular JS Training

About the Course

Angular JS certification training is designed for developers who are responsible for building applications using AngularJS. Through a combination of presentations and hands-on practices, participants will explore Angular comprehensively and learn to build components, directives, template-driven forms, routing, etc. for complex data-centric (enterprise) applications. This Angular online training will update your knowledge and skills with the current Angular version to lift your career.

Why Should you take Angular JS Training?

The average salary for “Angular Developer” ranges from approximately $92,814 per year for a Developer to $113,069 per year for a Full Stack Developer (Indeed.com).
YouTube, Google, Cisco, Nike, Samsung, Microsoft, Forbes, BMW and many Fortune 500 companies are using Angular as their front-end development framework to deliver an engaging user experience.
Angular’s powerful cross-platform feature allows developers to build progressive web applications and native mobile applications.

What you will Learn in this Course?

Introduction to Angular

Introduction to Angular
Comparison between front-end tools
Angular Architecture
Building blocks of Angular
Angular Installation
Angular CLI
Angular CLI commands
Angular Modules

Angular Components and Data Binding

Working of Angular Applications
Angular App Bootstrapping
Angular Components
Creating A Component Through Angular CLI
Ways to specify selectors
Template and styles
Installing bootstrap to design application
Data Binding
Types of Data Binding
Component Interaction using @Input and @Output decorator
Angular Animations

TypeScript

What is TypeScript
Need of TypeScript
How to install TypeScript
Nodemon for monitoring changes
Interfaces in Class, String Templates, Maps,
Sets and Object Restructuring

Directives and Pipes in Angular

Angular Directives
@Component Directive
Structural Directives
Attribute Directives
Custom Directives
Pipes
Built-in Pipes
Chaining pipes
Custom pipes
Pipe Transform Interface & Transform Function
Pure and Impure pipes

Angular Services and Dependency Injection

Angular service
Need for a service
Dependency Injection
Creating a service
Hierarchical Injector
Injecting A Service into Another Service
Observables
RxJS Library
Angular’s Interaction with Backend
Parts of an Http Request
HttpClient

Forms in Angular

Forms in Angular
What are their functions
Advantages of Forms
Various Types of Forms
What is Angular Validation and Model driven approach

Angular Routing

Angular Routing
Angular Routing benefits and features
Building a single page application and updating it dynamically with Angular Routing
What is Parameter Routing
Router Lifecycle Hooks and Child Routes

Authentication and Security in Angular

What is Authentication?
Authentication and authorization
Types of Authentication
Where to store tokens?
JSON Web Tokens (JWT)
Authentication in Angular application
Security threats in web application

Testing Angular applications

Testing of Angular applications
Deployment of Angular Test Bed for testing on Angular framework
Setup of various tools for testing
Testing services in Angular Framework
E2E and Document Object Model testing

Got a question for us? Please mention it in the comments section and we will get back to you.

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