This is a beginner’s guide to angular for those who are new to the language. To learn all of the features, we’ve created clear and crucial concepts. Some advanced Angular tutorials are also covered in this session. So, instead of wasting time with an introduction, let’s get right to the topic.
What is Angular JS?
Angular is a JavaScript-based, open-source client-side framework that aids in the development of web-based applications. Angular is, in fact, one of the greatest frameworks for designing Single Page Applications (SPAs).
Benefits of using Angular JS:
The following are the most important benefits of using Angular in web apps:
- Angular saves speed by changing the page DOM immediately rather than inserting inner HTML code.
- Data binding occurs at various stages during the execution of JavaScript code, rather than at the time of each control or value change (no change listeners). Because a single bulk Model/View update replaces hundreds of cascading data change events, performance is significantly enhanced.
- It is not essential to use observable functions. Angular examines the page’s DOM and generates bindings based on Angular-specific element properties. Because there is less code produced, the code is clearer, easier to understand, and has fewer errors.
Key Concepts:
Modules: Modules are the framework’s first and most fundamental component. Every Angular application has a root module. It includes the bootstrap framework, which is needed to launch the program. Because apps might have a variety of functional modules, you must register any custom Angular modules in the app.module.ts file. The development and reusability of complex solutions are aided by composing code into observable modules. Every programmer has their own views about how to make the most of these modules.
Components: At least one component is present in every Angular project. It’s a root component that connects the component hierarchy to a DOM page. Every component has control over at least one screen view. Components are the classes that hold all of the data and logic for the application. You’ll notice that when you build a new app, you’ll be given a component by default — app.component.html. It’s also included in app.module.ts by default.
Metadata: The Metadata block instructs Angular on how to handle a class. In order for the class to be capable of configuring a class’s intended behavior, it will need to be decorated. A decorator is used to apply metadata to Typescript objects. Decorators are at the heart of the Angular framework’s creation process since Version 2.
Data Binding: Developers must link data to the user interface and update data as user interactions with the UI change when writing code. This is their immediate responsibility. Angular is in charge of data binding, which is coordinated with templates and components. This has the effect of lessening the annoyance of endless coding.
Services: User-defined classes are represented by Angular development services, which are utilized to solve a variety of difficulties. Only template-specific codes should be included in components. Components are in charge of improving the app’s UI/UX and outsourcing business logic to services.
Dependency injection (DI): is a framework feature that allows developers to keep component classes clean and simple. To collect data or log to the console, dependency injection does not utilize a server. These obligations were instead transferred to the services by DI. The block is connected to the framework. It’s used to provide new components with the services or resources they need.
Resources:
A range of free resources is available to help you learn Angular. The following are some of the top Angular tutorials.
- Angular on FreeCodeCamp
- A Better Way to Learn Angular by Thinkster
- Udemy Angular Course
- Angular Playlist by LetsBoot
- Build Your First Angular App by Scrimba
- Angular Beginners Guide
- Learn Angular & TypeScript
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