Introduction to Angular 2 [A Most Popular JS Framework]

Angular 2 is a most popular framework for developing mobile apps. It is also for desktop as well mobile applications.

Angular 2 vs. Angular 1

Angular 4 vs. Angular 2

Angular 5 vs. Angular 4

Angular 6 vs Angular 5

The Angular 2 is focusing on data-binding, extensible HTML and on application test-ability but it is still in design and prototyping stage.

Angular framework helps us to build client applications in HTML and JavaScript.

Angular 2 is so simpler, faster, modular and instrumented design.

Angular 2 targeting to modern browsers and it is developing using ES6 (The ES6 is called ECMAScript version 6). It also support to ECMAScript version 5(ES5).

You don’t worry about the versions of ECMAScript. The compiler manages to the versioning related problems.

All the Angular 2 framework code is already being written in ECMAScript 6.

The set of modern browsers are

1. Chrome

2. Firefox

3. Opera

4. Safari

5. IE Version10 and 11.

Stayed Informed – 13 Best Advantages for Angular 2

On mobiles, it is supporting to the list of Chrome on Android, iOS 6+, Windows Phone 8+ and Fire-Fox mobile and also trying to support to older versions of Android.

The Angular 2 is using Traceur compiler to generate the nice ECMAScript 5/6 that runs everywhere you want to do.

Angular 2 team working with Traceur compiler team to provide the support to build some extensions. This set of extensions called “ES 6 +A”.

Stayed Informed – What's New In Angular 8?
Stayed Informed – What's New In Angular 7?

What is ECMAScript ES5/ES6?

The ECMAScript is a scripting language which is developed by Ecma International Org.

Currently ECMAScript available in multiple versions that are ES5 and ES6 and both of versions fully supported to Chrome, Firefox, Opera, Safari, and IE etc.

What is Traceur Compiler?

The “Traceur” is a JavaScript compiler. The Traceur compiler is very popular now days use to allow use to use the features from the future. This compiler is fully supported to ES5, ES6 and also to vNext. The main goal of Traceur compiler is to inform to design of new JavaScript features and wrote the programming code of new efficient and good manners.

What is Advantages of Angular 2?

1. There is many more advantage of Angular 2.

2. The Angular 2 has better performance.

3. The Angular 2 has more powerful template system.

4. The Angular 2 provide simpler APIs, lazy loading and easier to application debugging.

5. The Angular 2 much more testable.

6. The Angular 2 provides to nested level components.

7. The Angular 2 execute run more than two programs at the same time.

The Angular 2 architecture diagram identifies the eight main building blocks as.

1. Module

2. Component

3. Template

4. Outpouts

5. Data Binding

6. Directive

7. Service

8. Dependency Injection

The Angular 2 framework consists of several libraries, the some of them working as core and some are optional.
Angular 2 docs

Introduction of Angular 2	Setup Angular 2 in .NET MVC	Advantages of Angular 2
The Major Changes of Angular 2	Component Lifecycle Hooks	Support of Modern Browsers
Angular 2 Vs. Angular 1	Angular 4 Vs. Angular 2	Constructors Vs. OnInit
Use of ngInit and ngOnInit	ngOnInit() Vs. Constructors	HTTP Cookies
Dependency Injection (DI)	Inject() Vs. Injectable()	Features and Benefits
Bindings in Angular 2	Initialize an Array in Angular 2

Angular 4 and Angular 5 Fundamental Concepts

What's New in Angular 4?	Why Use Angular 4?
How to Setup Angular 4 Development Environment?	What are the “Great Advantages” of Angular 4?
How to Upgrade Web Applications from Angular2 to Angular4?	How to Set Http Request Header in Angular 4?
What are differences between Angular 4 and Angular 2?	What Is the forRoot Method in Angular4?
What is If-Else-and-Then Conditions in Angular4?	What Is the Difference Between [ngFor] and [ngForOf]?
What Are Isolated Unit Tests?	What Are Angular Testing Utilities?
Isolated Unit Tests vs. Angular Testing Utilities!	What classes should I add to module's declarations?
What classes should I not add to module's declarations in Angular 4?	What Happen when I Import the same Module Twice?
Angular 4 Grid with CRUD operations	What Is Angular Router? What’s New Angular 4 Router?
Angular 4 Error Handling - Logging, Retry Request and HttpCache!	How to Handling Error and Logging it?
How to Implement Http Cache using Interceptors in Angular 4?	How To handle and retry the failed request due to Poor Network Connection in Angular 4?
How to Validate Form in Angular 4?	How to Validate Password and Confirm Password in Angular 4?
How To Handle XSS or CSRF Attacks in Angular 4 ?	How can XSS be done in an Angular application? How can we fix it?
How Angular Apps Prevent this Attack?

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Encryption and Decryption Data/Password in Angular

You can use crypto.js to encrypt data. We have used 'crypto-js'. Follow the below steps, Steps 1 – Install CryptoJS using below NPM commands in your project directory npm install crypto-js --save npm install @types/crypto-js –save After installing both above commands it looks like – NPM Command 1 -> npm install crypto-js --save NPM Command 2 -> npm install @types/crypto-js --save Steps 2 - Add the script path in “ angular.json ” file. "scripts" : [ "../node_modules/crypto-js/crypto-js.js" ] Steps 3 – Create a service class “ EncrDecrService ” for encrypts and decrypts get/set methods . Import “ CryptoJS ” in the service for using encrypt and decrypt get/set methods . import { Injectable } from ...

How To convert JSON Object to String?

To convert JSON Object to String - To convert JSON Object to String in JavaScript using “JSON.stringify()”. Example – let myObject =[ 'A' , 'B' , 'C' , 'D' ] JSON . stringify ( myObject ); ü Stayed Informed – Object Oriented JavaScript Interview Questions I hope you are enjoying with this post! Please share with you friends!! Thank you!!!

Angular Testing Questions and Answers | 9, 8, 7, 6

What Is Testing? The testing is a tools and techniques for a unit and integration testing Angular applications . Why Test? Tests are the best ways to prevent software bugs and defects. How to Setup Test in Angular Project? Angular CLI install everything you need to test an Angular application. This CLI command takes care of Jasmine and karma configuration for you. Run this CLI command- ng test The test file extension must be “.spec.ts” so that tooling can identify the test file. You can also unit test your app using other testing libraries and test runners. Types of Test – The all great developer knows his/her testing tools use. Understanding your tools for testing is essential before diving into writing tests. The Testing depends on your project requirements and the project cost. The types of Testing looks like - 1. Unit Test 2. Integration Test 3. En...

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