What is Angular? – A Beginner’s Guide
If you are into software development, you may have heard about Angular. It is one of the most popular JavaScript frameworks, that developers use to build dynamic websites. In this article, you will learn the concept of AngularJS, when was Angular’s first built, and its advantages.
What is AngularJS?
So what is Angular? It is an open-source software engineering framework used for building single-page web apps. Developers also use it to create animated menus for HTML web pages.
The framework is the brainchild of Google engineers, Misko Hevery and Adam Abrons. Google officially released the first version, AngularJS, in 2012, and has been maintaining it ever since.
Before the release of AngularJS, there were other ways to create dynamic pages. However, they were not as convenient as the framework.
AngularJS uses the Model-View-Controller (MVC) architecture, which is used in web app development.
This type of architecture consists of:
- Model – the data structure that manages information and receives input from the controller
- View – the representation of information
- Controller – responds to input and interacts with the model
In the context of AngularJS, the model is the framework, while the view is HTML, and the control is JavaScript.
To put it simply:
- AngularJS binds JavaScript and HTML
- JavaScript accepts the user input and sends it to AngularJS
- AngularJS uses the input to modify HTML
With the framework binding JavaScript and HTML, the code between them is synchronized. This mechanism makes developers’ jobs easier because it reduces the amount of code needed to write.
Advantages of AngularJS
AngularJS is popular among web developers for a couple of reasons:
- Two-way data binding – Since AngularJS’s architecture binds JavaScript and HTML, the code for both are already in sync. Thus, the framework saves a lot of time for developers.
- Directives – The framework extends HTML files’ functionality with directives. To enable directives, developers add the ng- prefix to HTML attributes. You can see the list of directives here. Below is an example of the use of directives:
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="" ng-init="age='20'">
<p>Input your age:</p>
<p>Age: <input type="text" ng-model="age"></p>
<p>You wrote: {{ age }}</p>
</div>
</body>
</html>
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="" ng-init="age='20'">
<p>Input your age:</p>
<p>Age: <input type="text" ng-model="age"></p>
<p>You wrote: {{ age }}</p>
</div>
</body>
</html>
- Code Structure – AngularJS provides you with templates; allowing you to produce apps with clean code. Not only does it save time, but also makes it easier for you to modify or fix your apps.
- Testing – The framework supports unit and integration testing.
- Bright Future – Angular’s future is bright because of its functionality and popularity. Its user base keeps on growing, and it has loads of in-depth documentation that is constantly updated.
- Mobile and Desktop Compatibility – AngularJS can run on most web browsers. Not only on desktop, but also mobile devices.
Before Learning AngularJS
You need to remember that AngularJS is a JavaScript framework. Consequently, you need to understand the basics of the programming language before learning AngularJS.
The same applies to related programming languages such as HTML, CSS, and AJAX.
Knowing the basics of JavaScript before learning AngularJS will enable you to:
- Follow the fast development of Angular
- Know when to use the framework
- Become a flexible and innovative developer
Conclusion
AngularJS is a JavaScript framework that developers use to create single-page web apps. Because of its use of the Model-View-Controller architecture, you do not have to manually write the same code for the HTML and JavaScript files.
Apart from that, the framework offers a number of benefits:
- Code templates
- Extensive documentation
- Testing
- Mobile and desktop compatibility
If you have questions, please leave a comment below!
Aldwin is a digital content writer at Hostinger. Specializing in web hosting and WordPress for years, he is eager to help people uplevel their business on the internet. Apart from being a tech junkie, Aldwin likes fiction and photography.