Navigating the AngularJS landscape can be a daunting experience. While the library itself is fairly robust, choices early in the adoption process can have drastic long-term effects on your software development process. Below we present five things that you should know about AngularJS. This information won’t solve every problem you’ll have with the library, but it can help you get off on the right foot.

1. 5 Things To Know Before You Get Started
With AngularJS
Navigating the AngularJS landscape can be a daunting
experience. While the library itself is fairly robust, choices early
in the adoption process can have drastic long-term effects on
your software development process. Below we present five
things that you should know about AngularJS. This information
won’t solve every problem you’ll have with the library, but it
can help you get off on the right foot.
1. AngularJS is Entirely Client-Side
AngularJS is written in JavaScript, and it functions entirely on the client side.
This means two things for your app. First, you can run AngularJS in any browser
that can execute JavaScript, making deployment a snap. Secondly, you can
drop AngularJS into any project without significant back-end modifications.
This greatly reduces the risk in adopting AngularJS for the front-end display
of your app. AngularJS is built off of HTML attributes, making enabling
processing of data a fairly quick process, though in order to use AngularJS
effectively you’ll likely have to rewrite a portion of your presentation layer.
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2. 2. AngularJS is Focused on Data
AngularJS is designed to separate your presentation layer from your business
logic layer. It ties the HTML structure of a web page into underlying JavaScript
data models, and allows the app to make significant changes to the data
without performing the typical extensive DOM manipulations used in other
JavaScript libraries. AngularJS follows a Model-View-Controller (MVC) pattern,
which encourages loose coupling between presentation, data, and logic. The
data for a page in an AngularJS application can come from any of the standard
locations, including static or dynamic JSON data obtained from a server or a
web API call, as well as being hard-coded into the page.
3. AngularJS Provides a Declarative UI
Most modern apps use JavaScript in various ways to present and manipulate
the application’s data. This leads to convolutions in logic where the HTML
of a web page needs to be nearly constantly modified and rebuilt in order to
present information developed using the procedural programming inherent in
JavaScript’s design. AngularJS, on the other hand, takes a declarative approach
to data presentation that more closely mimics the intent behind the design of
HTML. In essence, AngularJS lets you focus on what is presented, as opposed
to the procedural focus on how it is presented.
4. AngularJS Data Objects are POJO
All objects in AngularJS are POJOs, which stands for Plain Old Java(Script)
Objects. What this means is that you have all the standard functionality
of JavaScript available for object manipulation, allowing you to easily add
and remove properties from your objects, and make use of all the built-in
collection handlers to loop through your data at will. This results in cleaner
code that is more quickly understood by developers, and removes the need
for adding special case functions to your data objects in order to get the
behavior you want.
5. AngularJS is Built for Testing
Unit and functional testing produce more robust, dependable code. AngularJS
was developed with this ideal in mind, and is designed from top to bottom
to make testing a relatively painless process. AngularJS uses Dependency
Injection (DI) to pass information around, allowing your tests to easily override
the function calls and inject appropriate mock data. This is important for
writing robust unit tests that isolate the functionality being tested. There are
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3. also a number of tools built into AngularJS, such as a mock HTTP provider, that
make writing larger functional tests a more dependable endeavor. Finally,
there are numerous open-source tools for running test suites in AngularJS,
including Karma for running tests and Jasmine for behavior-driven testing.
Conclusion
AngularJS is a powerful tool which, when used correctly, can make your
presentation layer both more maintainable and more robust. With its focus
on data-presentation as a declarative effort, it more closely mimics HTML
and its robust interpretations across multiple scenarios. By keeping the above
items in mind, you can help direct your development organization in how it
uses AngularJS to enhance your application’s data presentation, and prevent
long-term pitfalls that can add unnecessary costs and complexity to the
development process.
Looking to develop with AngularJS? Try Backand and get started immediately
– connect your database with cool customized directives in order to create
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