AngularJS is a JavaScript framework that can be used when
you are building a CRUD client side app. CRUD stands for create, read, update,
delete majority of web applications that are made for rich client sided
applications.
So why do people developers slant towards AngularJS
The main reason could be because it allows for rich client
side interaction. If, in the past, you had to put up with boring static pages
with text and more text, that is no longer the case now. AngularJS can be run
anywhere that JavaScript can run and it is written completely in JavaScript
framework. AngularJS is thus completely a client side support framework.
Have a look at the advantages and disadvantages:
The good side
Developed by Google
The first advantage of AngularJS is that Google developed
it. So you can be assured that the code is reliable and efficient. This
framework was built by a community of dedicated developers and not by a
community of amateur hobbyists, as was the case with several other frameworks.
AngularJS is maintained by a very large group of Google engineers and even
though you may not have access to a large pool of engineers to clear your
doubts and post your queries, you have the advantage of gaining the guidance of
highly skilled and talented engineers.
Getting started is incredibly easy
Starting with and using AngularJS is incredibly easy. You
can actually add a few attributes to your HTML and reap the benefits of a
simple Angular app in as much as five minutes. You can use HTML attributes to
access Angular S directives.
Two-way data binding
It is possible to do two-way data binding with AngularJS,
meaning you can make any data related changes and it would immediately be
propagated to the corresponding views and when any change is made in the view,
that would happen in the underlying model as well. As soon as the app data
changes, there will be corresponding changes in the UI as well.
Use of custom directives
For many developers the directives AngularJS is a personal
advantage. If you have been wishing for a browser that would do a couple of
tricks for you like creating custom HTML tags or decorate elements with
behavior, then Angular JS makes it possible. Additionally, you can also
manipulate DOM attributes in several exciting ways.
Dependency injection
The built-in dependency injection is something most
developers love about AngularJS. This feature helps them to develop, test and
understand applications in a better way. With the DI feature, you no longer
have to go looking for dependencies, or make them yourself, but would be made
and brought before you. In order to ensure you have AngularJS’s core features,
you can simply add that parameter and customize it as well.
Client side MVC framework with Angular JS
Client side MVC framework is important when you start
working with HTML and data on your page. MVC frameworks are tools that would
help you manage web page interactions and data collections. Angular JS provides
the best “lightweight solution” for creating a balance between the client logic
and server. Apart from the other advantages mentioned above, like two-way data
binding and dependency injection, AngularJS enables you to quickly write client
side web applications by using the basic principles in the MVC software design
patterns as well. Though you cannot make use of MVC framework in the
traditional sense, you can do it in the MVVM model. MVVM model stands for
Model-View-View-Model. Here Model means the JavaScript objects or data in the
application.
Use of filters
- Filter
- Currency
- json
- limitTo
- Lowercase
- Number
- OrderBy
- Upprcase
- Date
Additionally, you can also make your own filter by
registering a new filter factory function when you are working with your
module.
The bad side of AngularJS
The libraries have to be AngularJS specific
Most developers feel that AngularJS increases test time
considerably and this in turn affected build time. The framework does not work
very well with tools or libraries that are not AngularJS specific. If you want
to test rich single page apps that have several JavaScript iterations spread
across pages, you may have to use two different testing stacks. But developers
do not advise it.
Nature of AngularJS framework
Developers say that AngularJS framework has its own specific
view of the world, and people who are going to use this framework would have to
accept its way of doing things. Though frameworks are useful in helping you
generate that MVP (Minimum Viable Product), you still have to ensure its
maintainability. The only way to work with AngularJS is to come around to its
terms. You can only use a tool that is within its ecosystem, hence, that makes
the JS library very restricted.
Additionally, you will have to be aware of any memory leak
in JS, because if there is one, it would lead to slow browsers, however
powerful your system may be. AngularJS do not support older versions of
Internet Explorer 8.0.
The framework is complicated
Some developers say the framework is overcomplicated and
unless you are highly experienced, it is not possible to use it. You need to be
aware of what is happening in the front end to read the code.
Conclusion
Even so, Angular
JS is still the most popularly used framework. You might run into problems, but
those are “fixable” problems. Perhaps, developers like using Angular JS because
it allows the developers to fragment their logic into modules, making the codes
more granulated.