Chapter – II
3D’s of Angular.js
Data Binding
One of the
core feature you will want in every presentation or client side development
framework is data binding. Unlike any other frameworks angular provides two way
data binding. In angular all you will have to do is to connect the view to a
model. And you are done! Later in your application if the model changes the
view get changed and if the view changes the model get changed. This feature
was so much needed because before that developers have to write additional
codes to update the views and models separately. Now there is less code and
less code is always good!
Directives
Directives
are like your custom HTML. Angular has many built in directives that makes your
HTML declarative. Some of them are ng-view, ng-model, ng-controller etc. You
can build your own directives and to make a custom HTML element, attribute or
class. By default all directives that you create are attributes if you don’t
define its mode. We will take a deeper dive into directives later.
Dependency Injection
Dependency
injection is how your angular modules talk to different services throughout the
applications [We will talk about modules and services later]. As I
already said you can use other library like jquery with angular. To do that you
will have to inject the library dependency where you will be needed it.
Angular’s own services are separated into different files. To use these different
services throughout different modules, you will have to inject the
dependencies. For example if you want to use angular’s animation service you
will have to inject the ngAnimate into your application module.
