Why I Chose AngularJS
28 June 2013

Why I Chose AngularJS

I chose AngularJS because it seemed closer to what I know. More like Backbone. Data-binding is touted as Angular’s killer feature over Backbone, but there’s a lot more to Angular. I also chose Angular because everybody else here in the shop was learning Ember. What is wrong with me?


Angular templates are HTML. I know HTML, that side of Angular gives me comfort. You write valid HTML and “sprinkle” it with Angular directives (ng-repeat, ng-hide, etc). Angular traverses the DOM, collects the directives, and produces a live view that is plugged into your application’s scope. It’s cool. You can write directives to customize your UI.


Angular scopes are something you encounter quickly and it’s an important piece. Scope is actually $scope in an Angular app, and it is the connection between an Angular controller and the view. Every object or function you attach to $scope in the controller is available to the view. Scopes model the DOM and are hierarchical.


I was intrigued by the lack of an Angular Model. I’ve always liked the flexibility and simplicity of Javascript objects. Models in Angular are any object, simple or complicated, that you choose to attach to the app’s scope.

But modeling the relationships between objects in my app wasn’t simple. When I have a Post that has an Author, and Author that has many Posts, and no “database”, things get trickier. This isn’t Angular specific, and probably speaks to my inexperience a bit. I had to be very diligent about maintaining a single source of truth, and eliminating state. It feels like this would be easy in Ember.


The Data problem is the arena of Angular services. You write Angular services to share things between controllers in your app. In my case it was a collection of Post models and a collection of Author models. That was my data and every controller in my app needed access to it. You hear a lot about dependency injection. Services is where that comes into play. When you define a controller you also define what services it’s going to need, and pass those in.


Documentation is really good in Angular. In fact I’m sitting here reading it and realizing I haven’t even scratched the surface of how cool this is. Here are some of my favorite pages:


There’s not a huge learning curve for Angular. There are a few unfamiliar concepts that you run into early, and can read about. The “right way” to do things isn’t apparent at first, but it’s up to you and you can go fast. That can be a double edged rope with which to hang yourself. Writing an Angular app was enjoyable and painless, and Angular does some cool simple things that make sense.

Thanks to Michael Ball for giving me some exposure to this awesome tool.

Heads up! This article may make reference to the Gaslight team—that's still us! We go by Launch Scout now, this article was just written before we re-introduced ourselves. Find out more here.

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