Social media, Healthcare, E-Commerce, online banking to many other sectors, billions around the world use web portals and mobile applications. Frameworks like Angular are used to make these amazing reliable applications.
Table of Contents
2. What is the purpose of Angular
4.What is the use of Framework?
- Model for document objects
- TypeScript
- Binding
- Testing
7. Architectural Composition of Angular
- Modules
- Components
- MetaData
- Templates
- Services
- Dependency Injection
- Custom Components
- Data Binding
- Dependency Injection
- Testing
- Comprehensive
- Browser Compatibility
11. Conclusion
What is Angular?
Angular is a JavaScript framework which is an open-source platform as well as developed in Typescript. It is maintained by Google, and its main use is to create single-page applications. Angular is a framework with undeniable benefits that also gives programmers a uniform framework to work with. It gives users the ability to make huge apps in a manageable way.
What is the Purpose of Angular?
The most popular client-side web application programming language is JavaScript. It is incorporated into HTML documents to facilitate various online page interactions. Due to its widespread support, it is a straightforward and simple to use language that is well adaptable for building contemporary web applications. Although, with updated versions, JavaScript may not be the best programming language for building single page applications. To assist us in achieving our objectives, there are numerous frameworks and libraries available today.
One framework that deals with many, if not all, of the issues developers run across when using JavaScript alone is Angular. Angular developers can build web applications, SPA, and PWA.
Versions of Angular
The umbrella title for all existing framework iterations is “Angular”. Since Angular’s creation in 2009, there have been numerous revisions.
The first version of Angular was Angular 1, which later became known as AngularJS.
Then followed Angular 2, 3, 4, 5, and lastly, Angular 11, which was launched on November 11, 2020. Every new Angular version builds upon the one before it, addressing problems, correcting bugs, and adapting the platforms’ increasing complexity.
It would be ideal to upgrade to the most recent version if you wish to create apps that are more complex and/or better suited for mobile devices.
What is the use of Framework?
In general, frameworks improve the speed and effectiveness of web development by giving developers a consistent structure so they don’t have to continuously write new code from the start. Frameworks are time-saving tools that give programmers access to a variety of supplementary capabilities that may be added to applications without adding additional labor.
Why is Angular Beneficial?
The most popular client-side programming language is JavaScript which is incorporated into HTML texts to allow for numerous different interactions with web pages. It’s a good platform for creating contemporary apps because it is widely supported and reasonably simple to learn.
But is JavaScript the best programming language for creating single-page apps that need to be modular, testable, and developer-productive? Our answer is Maybe not.
There are several frameworks and libraries available nowadays that are made to offer different solutions. When it comes to front-end web development, Angular takes care of most, if not all, of the problems that arise when utilizing JavaScript alone.
Features of Angular
Model for Document Objects
An XML or HTML page is treated by the document object model (DOM) as a tree structure, with each node denoting a distinct section of the content.Regular DOM is used by Angular. Take into account that the identical HTML page has received ten revisions. Angular will update the full tree structure of HTML tags rather than just the ones that have previously been modified.
TypeScript
Users can write more understandable JavaScript code by using TypeScript, which defines a set of types for JavaScript. Any platform can easily support the smooth operation of the TypeScript code thanks to JavaScript compilation.
Using TypeScript is not required to create Angular applications. It is nevertheless strongly advised because it provides superior grammatical structure and makes the codebase simpler to comprehend and maintain.
Binding
Through a process called data binding, users can control many parts of web pages. It uses dynamic HTML instead of intricate scripting or programming, and Web pages with interactive elements, such as calculators, tutorials, forums, and games, require data binding. It also makes it possible for web pages with a lot of data to be displayed more effectively incrementally.
In Angular, two-way binding is used. Any modifications made to the associated UI elements are reflected in the model state. In contrast, any changes to the model state are reflected in the UI state. With the aid of the controller, the framework is now able to link the DOM to the model data.
Testing
The Jasmine testing framework is used by Angular. The Jasmine framework has numerous functionalities to create various test case types. The task-runner for the tests, Karma, configures the start-up, reporters, and testing framework in a configuration file.
Now that you are familiar with the fundamental components of Angular, you must comprehend its architecture if you intend to use it regularly. By enrolling in the Angular Certification Training Course and learning about TypeScript, Bootstrap Grid System, dependency injections, SPA, forms, pipes, promises, observables, and Angular class testing, you can also deepen your understanding of Angular.
Architectural Composition of Angular
A complete model-view-controller (MVC) framework is Angular. It supports bi-directional data flow while offering real DOM and clear instructions on how the application should be organized.
There are major 5 components of Angular, namely:
- Modules
- Components
- MetaData
- Templates
- Services
- Dependency Injection
Modules
A root module called AppModule serves as the application’s bootstrap mechanism in an Angular application.
Components
A component is a self-contained piece of data and code that is packaged together to run an application. A user interface piece is typically referred to as a component (UI). Strong encapsulation and an easy-to-understand application structure are provided by Angular’s component model. One UI component library that uses Material Design in Angular is called Angular Material.
MetaData
In order to parse a class, metadata instructs Angular, and also configure the anticipated behavior of a class, it is utilized to decorate the class.
Templates
The HTML elements in the Angular template are altered before being displayed by combining Angular markup with HTML. Two varieties of data binding exist:
- The ability to update application data in response to user input in the target environment is provided by event binding.
- Property binding: Allows users to insert values extrapolated from data in your application into the HTML.
Services
A service class is made when data or logic that isn’t related to the view yet needs to be shared throughout components. The @Injectible decorator is always connected to the class.
Dependency Injection
You may maintain your component classes’ efficiency and clarity using this capability. It doesn’t evaluate user input, fetch data from a server, or log directly to the terminal. Instead, it hands over these duties to the services.
Angular has its own unique set of benefits and drawbacks. The next two parts provide a succinct explanation.
Advantages of Angular
Since its introduction, numerous versions of Angular have been produced. All of these versions improved the framework’s efficiency.
Custom Components
Angular allows users to develop their own components, which can combine functionality and rendering logic into reusable sections. It works well with web components as well.
Data Binding
Angular allows users to easily move data from JavaScript code to the screen and respond to user events without writing any code.
Dependency Injection
Users can use Angular to create modular services and feed them where they’re necessary. This facilitates the testability and repurposing of similar services.
Testing
Tests are first-rate tools, and Angular was designed with testability in mind from the start. You will be able to test every component of your application, which is highly recommended.
Comprehensive
Angular is a complete framework that provides unique solutions for server connectivity, networking within your functionality, and more.
Browser Compatibility
Angular works with a variety of browsers. An Angular application can often run on all browsers like Chrome and Firefox and even with operating systems like Windows, macOS, and Linux.
Limitations of Angular
Steep Learning Curve
Directives, modules, decorators, components, services, dependency injection, pipelines, and templates are the fundamental Angular components that all developers should be familiar with. Change detection, zones, AoT compilation, and Rx.js are some of the more complex concepts. Because it is a full framework, Angular 4 may be difficult to learn for complete beginners.
Limited SEO Options
Angular provides few SEO tools and is inaccessible to some search engines.
Migration
Among the factors why firms do not typically use Angular is the difficulties in migrating legacy js/jquery-based programmes to angular-style architecture. Furthermore, each new release might be difficult to update, and many of these are not backward-compatible.
Verbose and Complex
The verbosity of the framework is a popular complaint among people who use Angular. It is also quite complicated when compared to other front-end tools.
Angular vs AngularJS
Many tend to get confused with the concept of Angular and AngularJS, especially beginners, given that the same framework has so many variations. We are all familiar with versions like AngularJS, Angular 2, Angular 4, Angular 5, Angular 6, and, most recently, Angular 7. In actuality, though, AngularJS and Angular are two distinct frameworks.
In the year 2010, AngularJS was first introduced which is the JavaScript-based web development framework. This framework is taken care of by Google. After 6 years, Angular 2 was introduced which used TypeScript, a superset of JavaScript, to completely redesign the entire framework. A TS compiler or transpiler is needed to transform TypeScript code to standard JS code because modern web browsers do not recognise TypeScript.
In a situation of using overhead of transpilation, the reason most people prefer Angular is because it makes use of TypeScript as the primary programming language. TypeScript provides more benefits when compared to traditional JavaScript. Developers and Programmers can use all data types, syntax highlighting, code completion and many other rich features that can help them code in a faster way which will ultimately increase productivity. Being an object oriented programming language, TypeScript offers developers the benefit of objects, classes, inheritance and other features that all other OOPLs provide.
Thus, Angular framework uses TypeScript as its main programming language. Angular 2, 4, 5, 6, and 7 are all versions of the same framework since the Angular team chose semantic versioning, with each version representing an upgrade over the previous one. Ultimately, AngularJS is an entirely different framework that makes use of JavaScript as the main programming language.
Summary
According to Statista, Angular is well established and one of the best online application frameworks. It summarizes how Angular is a leading provider of web development platforms and is a preferred option for big businesses. It is a framework made exclusively for developers and businesses who want to create innovative and aesthetically pleasing web applications.
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