The answer to Why we need Angular is as simple as asking for a web development framework that is easy to learn and understand, offers swift compilation, has a wide range of tutorials, documentation, and support for newcomers. Since its initial release, the Angular framework has been under continuous development, and every new release has various new features along with previous issues resolved. Along with such amazing benefits of choosing Angular, it is being supported by the Google Team, which itself is another great benefit. The easy addition of third-party tools and components makes it more interesting and easy to use. A command-line interface is an important part, and Angular’s CLI is easy to set up, use and comprises simple commands. Used to initialize, develop and maintain applications in Angular through the terminal. With a large number of engineers working on Angular CLI, updates are released for betterment. Now that we know what exactly the Angular framework is and where it works better let us dive into the boon and bone of this amazing framework. Pros and Cons of Angular: Every technology that comes to life has its advantages and disadvantages. Similarly, Angular has its own. These points define the place of any technologies in the whole system. Below are the points that show how and where Angular rocks and where it doesn’t: Component-Based: The whole architecture of Angular, which is component-based, is one of the most important factors that separate Angular from others. Providing code of higher quality in a proper hierarchy with components as sections with respective functionality. Testing Friendly: Having an application comprised of components as elements come with another advantage of being able to test Units separately in an efficient method.
How Angular Works?
While there’s a lot to Angular (which I’m not going to be going in depth with) there are three fundamental concepts that you need to grasp:
1. Components: the building blocks of Angular applications
2. Services: the way we add functionality into our apps.
3. Modules: the way we organize our components and services in our Angular application.
1.Components: Like most frontend tools, Angular is made of components. These components are then usually broken into three parts which regularly represents 3 files:
• Component: the part that handles all the logic.
• Template: HTML with Angular code to perform logic and embed data.
• Styling Module: styling for the component handled with your styling library of choice. Components are also able to communicate to each through different methods like Parent, Child, Sibling relationships or have data parsed through services form one component to another. Another cool feature of Angular is built in RxJS, a library for event driven, asynchronous communication. This allows data to be passed through components in real time.
2.Services: Angular services are used to provide functionality to your components. From interacting with a REST API to implementing gauds for access control (only allow admin users to access certain parts of the application). Services are injected into components by using a method called dependency injection. This is a technique in which an object receives other objects (such as a REST API service) that it depends on.
• Coupled Services Coupled services, basically means that the service is one with the component. While this is convenient, it could cause problems such as receptiveness as your component starts to scale. To solve this, we have decoupled services.
• Decoupled Services Decoupled services, means that the services are separate from the component. Now the service can be used in other components as well, without the need for repetition.
3.Modules: Components act as a way to organize each of the components in the application. Modules are responsible for the:
• Declarations: all the components, directives and pipes that belong to this module.
• Exports: the declarations that should be visible and usable in the other modules of the application
• Imports: other modules and components that has to be used in the module.
This allows for a modularity system, where you’d break up your application into individual modules that are all responsible for their own concerns. This is common for a Domain Driven approach, where each domain acts as it’s own section in the application.
When you modularize your application, it separates the responsibilities that each part of the application (components) needs to run resulting in clearer code that is better to maintain and is less error prone.
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