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Angular is a typescript-based Web 2.0 SPA (single-page app) framework open sourced by Google. Single Page Apps keep the entire user flow contained within a single page, avoiding the need to refresh the browser or make a full HTTP redirect request. Even when it appears as if you are going to another page, you’re actually just swapping out something like a partial and displaying a new view. SPAs are not for every use-case, but they can accomplish amazing things when building fast, high-interactivity user interfaces. Some great examples of single-page apps in action include rich dashboards, complex multi-step forms, or even just a search engine where you never have to leave to get your results.

Angular is one of the fastest and powerful SPA frameworks currently available and is a complete rewrite from the same team that built AngularJS. JavaScript frameworks like Angular do not solve any new problems but they fix the existing issues of data binding and view updating in logical, efficient ways which enable you to tackle far more complex applications than would otherwise be possible.


The Angular team has a special emphasis on performance. The new Change Detection strategy was a complete re-thinking with a performance-first approach. For a framework that provides so much functionality, tree-shaking (or dead-code elimination) was such a smart strategy that allowed application developers to filter out the modules that do not get called by the application code. This reduces the footprint of the framework drastically.
Compile-Time checks
With JavaScript being dynamic, it has some serious disadvantages. One of them is no real way of finding out bugs until run-time. Angular team’s smart decision to go with Typescript has now made it easy to find out errors on compile time. This is great for finding bugs quickly, increasing the code quality and speeding up the development cycle.
Separation of concerns
Angular makes it easy to follow the principle of separation of concerns. It follows more like a Model-View-Controller (MVC) pattern where the Component is the controller, and a Typescript class is the model, and the View is simply HTML. JavaScript applications usually have millions of lines of code with some low quality and high quantity code written with barely any thought towards maintainability.
Reduced complexity
Angular requires less lines of code to run complicated functionality. Compared to something like jQuery, Angular is much more sophisticated. Most of the complexity is under the hood. The major benefit of reduced code is ease of maintenance and speed of development.
Angular has done a lot of good work architecting the framework. They have chosen a scalability-first approach. Angular modules are way more comprehensive than a regular ECMAScript module. They logically group different Angular artifacts such as components, pipes and directives etc. These modules can be shared internally as well as externally. In short, they are a unit of reusability and help scale the application with ease.
Web is everywhere. One major benefit of Angular is that it can be reused on pretty much any platform. This includes progressive web apps, native mobile or tablets apps, as well as desktop applications.
Code Reuse
Angular uses templates created by the user to generate highly optimized code. This empowers regular developers to write less lines of code and not having to worry about making performance optimizations for the major portion of the application.
Smart loading and rendering
With the new Component Router, Angular apps load quickly, which delivers automatic code-splitting. This helps with loading code required to render the view they request.
Speed of development
With templates, the developer can quickly create UI views with simple, but powerful syntax. Angular CLI is a great command line tool for code generation. It can add multiple files and is highly configurable. It makes the process of adding components and tests as well as deploying it simply a piece of cake. One other major benefit is getting some great intelligent code completion and instant compile-time errors in major IDEs and editors.
Angular CLI creates Karma unit tests and Protractor end to end tests as part of the template. This is a very good practice. According to statistics, about 30% of the organizations still shy away from using any sort of unit testing or end to end testing. This is one good way to create standardized unit as well as end to end tests.