Angled better: What to look forward to from Angular 2.0

It’s a little funny that few bloggers refer to betas as unreliable when we use so much of the feedback on them to further enhance our applications. Angular 2 created its own buzz of course, and it was quite well deserved for reasons, not the least of which being development enhancement.

The best part is that the entire library is being rewritten and is meeting the Es6 specifications. The other thing that has gotten a few people buzzing is the fact that the rewrite is in Typescript.

As stated on Typescript official website,

“TypeScript lets you write JavaScript the way you really want to. TypeScript is a typed superset of JavaScript that compiles to plain JavaScript. Any browser. Any host. Any OS. Open Source.”

Now as to why is that important? Because you cannot really imagine web programming without JavaScript and Typescript is Microsoft’s superset of JavaScript. Angular 2.0 adopting it makes things exciting because now you have the benefits of Typescript on one end coupled with the power Angular always brought.

A few of them include:

  • Better code structuring
  • Use class-based object oriented programming
  • Impose coding guidelines
  • Offers type checking
  • Compile-time error checking
  • Intellisense

Mobile-friendly

The beta version got roars of approval because it finally takes the “not mobile friendly” tag away from One of the key features for both E5 and ES6 libraries was the support for mobile oriented applications but Angular did not allow that support. Because of the inclusion of Typescript as well as more libraries from Dart, Angular 2.0 is much better equipped for writing applications that need to be accessed from multiple platforms.

More choice for languages as well

With Angular 2, you can now write code in the following standards.

  • ES5
  • ES6
  • Dart
  • Typescript

Now with the basic differences setup, let us delve a little deeper into what is making Angular 2.0 tick over the previous one.

Components over controllers!

The problem with the controller paradigm is the amount of restriction you have in extending from it. The new Angular takes that approach further and is now making itself component based which is definitely a lot more encouraging.

Angular 1.x Controller

Angular 2 Components using TypeScript

The @Component can be exported so that you can add meta data to the class that you are creating, thus letting you extend your class for multiple exports.

With ultrafast change detection and immutable data structures, Angular 2 promises to be both faster and more memory efficient. Also, the introduction of uni-directional data flow, popularized by Flux, helps to ease some of the concern in debugging performance issues with an Angular app. This also means no more two-way data binding which was a popular feature in Angular 1.x. Not to worry, even though ng-model is no more, the same concept can be solved in a similar way with Angular 2.

By – Object Partner

Angular is actively taking the step for memory optimization by reducing the tasks for the compiler to execute. Scopes and controllers were increasing memory load on the compiler’s side so they are letting that part being handled by the machine from here on out.

Optimized user input
The Event Syntax takes over handling user input from here on out.

Angular 2.0:

You can use any kind of user generated input for any kind of data and the parentheses let you specify it.

Improved Dependency Injection

The dependency injection consists of 3 parts. The Injector, which contains the APIs to inject the dependencies and make dependency injection available. Bindings make it possible for dependencies to be named. Finally, the actual dependencies of the object are generated so they can be injected.
By Muller

As is with Directives, the dependency injection lets you write object constructs in a simpler manner. That’s again an added benefit within the API.

Directives can also be used within their own components which make their usage a lot neater. Obviously, with dependencies defined in components, that usage comes with its memory utilization but it makes a convenient use for inputs.

Big changes still undergoing

Importing and using mobile friendly JavaScript libraries is no mean feat. But essentially this is adding better options for developers who want to use Angular but were restricted. Forms and Validations are a great addition to use and developers can also make use of the generics from Typescript within Angular 2. There is more in works from the beat phase but all of it looks immensely promising. My advice: keep up to date on JS’s libraries and keep giving feedback on what other libraries should be included.

Author Bio:

Andrea Bell is a Freelance writer and a content contributor at www.zeolearn.com, which provides AngularJS and big data Hadoop training. She writes mostly on technology related stuff. Lives simply, gives generously and a sports lover. Find her on twitter @IM_AndreaBell.

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