This provides an MVC, Model-View-Controller framework on the client-side architecture, hence decreasing the complexity of web applications. It fast gained huge popularity in developing single-page applications because of the capability for dynamic binding of data/objects, a way to lessen code implementation in the process of creating complex web apps.
One of the most wanted and key features of AngularJS is two-way data binding. The same change in the UI, as soon as it changes the application's data model, makes its way in an instance—and vice-versa, if the data changes, it automatically affects the application model right back into the UI. No doubt, it saves a lot of developmental effort, for it does not require one to manipulate the DOM manually.
AngularJS supports the dependency injection approach, under which it becomes easy for a developer to inject services or dependencies directly into his application, making the code modular, maintainable, and scalable.
Through the use of custom-made directives and components, a developer can embed extra functionalities with the help of AngularJS. This will help in creating reusable UI elements. This is not only going to make development easier but will also maintain consistency within the app.
Soon after its release, AngularJS drew much attention due to the simplicity and power of building SPAs with less code. By 2015, AngularJS had become one of the most-used front-end frameworks in the world.
With growing demands in today's web, Google released Angular 2 as a total rewrite of AngularJS. It was considered a paradigm shift from AngularJS (Angular 1) to the more modular, component-based Angular 2.
The subsequent releases, like Angular 4, 5, and 6, offered a lot of changes in the works—AOT compilation, performance improvements, and cleaning up of the development process. It was in this period that Angular evolved into the first choice for developing enterprise applications.