Friday, July 25, 2014

Best Practices for Building Angular.js Apps

Burke Holland had a fantastic post explaining how Angular loads an application and comparing the merits of browserify vs require.js in an Angular app.

I’ve worked with Angular on quite a few apps at this point, and have seen many different ways to structure them. I’m writing a book on architecting Angular apps right now with the MEAN stack and as such have researched heavily into this specific topic. I think I’ve set on a pretty specific structure I’m very happy with. It’s a simpler approach than what Burke Holland has proposed.

I must note that if I was on a project with his structure, I would be content. It’s good.

Before we start though, the concept of modules in the world of Angular can be a bit confusing, so let me lay out the current state of affairs.

Read more here.

Data-Driven Forms with AngularJS’s Two-Way Data Binding and Custom Directives

Use the two-way data binding and custom directives features of AngularJS to develop data-driven, interactive forms.

Introduction


AngularJS has exploded on to the web-application development scene. Since being introduced in 2009, AngularJS’s use has grown exponentially. Its wide range of features and ease of use make it an ideal tool for rapidly developing modern web-applications. Combined with other modern JavaScript tools, such as Node, Express, Twitter Bootstrap, Yeoman, and NoSQL databases such as MongoDB, AngularJS developers can create robust, full-stack JavaScript applications.

A primary feature of AngularJS is two-way data binding. According to AngularJS’s website, ‘data-binding is the automatic synchronization of data between the model and view. The way that Angular implements data-binding lets you treat the model as the single-source-of-truth in your application. The view is a projection of the model at all times. When the model changes, the view reflects the change, and vice versa.‘ In the past, developers spent much of their coding time wiring up UI components to the application’s data model. AngularJS has greatly simplified this process.

Another key feature of AngularJS are directives. At a high level, according to AngularJS’ site, ‘directives are markers on a DOM element (such as an attribute, element name, comment or CSS class) that tell AngularJS’s HTML compiler to attach a specified behavior to that DOM element or even transform the DOM element and its children.‘ AngularJS provides many built-in directives, including ngModel, ngBind, ngInclude, ngRepeat, and ngChange. These directives are the building blocks of an AngularJS application. We will use many of these built-in directives in this post.

In addition to built-in directives, AngularJS allows us to create custom directives. Custom directives are a powerful feature, allowing us to encapsulate our own reusable DOM manipulation functionality.

Read more on the original article.

How to Combine D3 with AngularJs

How to Combine D3 with AngularJs — As we all know, Angular and D3 frameworks are very popular, and once they work together they can be very powerful and helpful when creating dashboards. But, they can also be challenging and confusing especially when new to these frameworks. The right way to incorporate D3 with Angular is to use custom directives. Directives in Angular are essentially functions that are executed on a DOM element. Let’s go through a simple example together.

Read more here.