What’s New in Angular 2?

Angular, or AngularJS as it’s formally known, is a front-end structural framework for dynamic web app development. It uses HTML as a layout dialect which it at that point extends to characterize an application's components. The Angular framework gives information binding and dependency injection that limits the measure of code you need to keep in touch with yourself. Since Angular works inside the program, it might be utilized with your server innovation of decision.

Google HQ declared the last discharge variant of Angular 2. Alongside numerous new features, Angular has experienced quite a couple of changes that may give engineers stop for thought. With an end goal to smooth the progress, we'll cover the most vital changes and get you on track to coding with the new Angular framework, beginning with Components and Directives.

Versioning

There have been a ton of objections from engineers who discovered Angular's Release Candidate marking befuddling. Because of these worries, and to make it simpler to oversee dependencies in future discharges, Angular 2.0.0 is the primary discharge to utilize semantic versioning, based on the MAJOR.MINOR.PATCH conspire as depicted by semver. The semver versioning plan declares that:

• the MAJOR adaptation gets increased when incompatible API changes are made to stable APIs

• the MINOR rendition gets augmented when in reverse compatible usefulness are included

• the PATCH rendition gets augmented when in reverse compatible bug are settled

New Features

Angular 2 has been bound to happen. Some portion of why the discharge took so long is that it is not any more only a web framework. Angular 2 is presently a stage that envelops an extensive variety of abilities, including:

Universal server rendering: Runs over a Node.js back end, which creates a server-rendered see. This extraordinarily enhances apparent execution for first-time clients of your application, accordingly enhancing their general involvement.

A portable toolbox: As the name suggests, the versatile tool stash gives every one of the devices and methods to build elite versatile apps utilizing Angular CLI and Angular Mobile Toolkit. Web apps built utilizing the portable toolbox will stack on any gadget, with or without an Internet association and can exploit the accessibility, share ability, and no-introduce required features of the Web.

A command line interface: The new Command Line Interface (CLI) can produce components, routes, administrations and pipes through commands. The CLI will likewise make straightforward test shells for these.

Component-based Architecture:

Angular 2 is totally component based, with the goal that controllers and $scope are presently old. In the accompanying Angular 1 code, the binding is prefixed with the controller nom de plume (e.g., VM or $ctrl) in light of the fact that you must be particular about the wellspring of the binding.

Directives:

Angular 2 characterizes two sorts of directives: Structural directives and Attribute directives.

Structural Directives

Structural directives modify the format of the DOM by including, supplanting and expelling its components. Two precedents of the structural mandate are:

NgFor: a repeater order that tweaks information show. It very well may be utilized to show a rundown of things.

NgIf: evacuates or reproduces a piece of DOM tree depending on an articulation assessment.

Attribute Directives

The attribute mandate changes the appearance or conduct of a DOM component. These directives look like standard HTML attributes in layouts. The ngModel mandate which is utilized for two-way binding is a case of an attribute order. A portion of the other attribute directives are recorded underneath:

NgSwitch: It is utilized at whatever point you need to show a component tree comprising of numerous kids. Angular spots the chose component tree into the DOM based on some condition.

NgStyle: Based on the component state, dynamic styles can be set by utilizing NgStyle. Numerous inline styles can be set at the same time by binding to NgStyle.

NgClass: It controls the appearance of components by including and expelling CSS classes dynamically.

Angular Component Frameworks: Introducing PrimeNG

PrimeFaces is an arrangement of 100-inch JSF-agreeable UI components. These PrimeFaces components bolster Ajax similarity and are compatible with most programs utilized by far most Internet clients.

Also, we should not overlook the WIP venture called PrimeNG, which is a gathering of rich UI components for AngularJS2. Every one of these accumulations has been created by the PrimeFaces group (Cagatay Civic pioneer) and are characterized as "Extreme UI Framework for Java EE." PrimeNG is open source under the Apache license and facilitated at GitHub.

Before composing an Angular 2 application, we need initially to set our development condition, by introducing the needed frameworks, as you will see in the primary segment of this article. The library itself can be introduced utilizing npm from a command line or by including the accompanying line in the .json bundle.