AngularJS is an open-source web application framework. It was originally developed in 2009 by Misko Hevery and Adam Abrons. It is now maintained by Google. Its latest version is 1.2.21.
Definition of AngularJS as put by its official documentation is as follows −
AngularJS is a structural framework for dynamic web applications. It lets you use HTML as your template language and lets you extend HTML's syntax to express your application components clearly and succinctly. Its data binding and dependency injection eliminate much of the code you currently have to write. And it all happens within the browser, making it an ideal partner with any server technology.
What Is AngularJS?
AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML's syntax to express your application's components clearly and succinctly. AngularJS's data binding and dependency injection eliminate much of the code you would otherwise have to write. And it all happens within the browser, making it an ideal partner with any server technology.
Concepts
The following diagram depicts some important parts of AngularJS which we will discuss in detail in the subsequent chapters.
Advantages of AngularJS
The advantages of AngularJS are −
It provides the capability to create Single Page Application in a very clean and maintainable way.
It provides data binding capability to HTML. Thus, it gives users a rich and responsive experience.
AngularJS code is unit testable.
AngularJS uses dependency injection and makes use of separation of concerns.
AngularJS provides reusable components.
With AngularJS, the developers can achieve more functionality with short code.
In AngularJS, views are pure html pages, and controllers written in JavaScript do the business processing.
On the top of everything, AngularJS applications can run on all major browsers and smartphones, including Android and iOS based phones/tablets.
Disadvantages of AngularJS
Though AngularJS comes with a lot of merits, here are some points of concern −
Not Secure − Being JavaScript only framework, applications written in AngularJS are not safe. Server side authentication and authorization is must to keep an application secure.
Not degradable − If the user of your application disables JavaScript, then nothing would be visible, except the basic page.
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Also Read: AngularJS Interview Questions and Answers