Angular – Introduction

Angular is a TypeScript-based open-source web application framework developed and maintained by Google. It is widely used to build dynamic, scalable, and feature-rich web applications. Angular is the successor to AngularJS, with a completely restructured architecture and improved performance.

Angular is an open source, TypeScript based front end web application framework. Angular has been released by Google’s Angular community. This tutorial starts with the architecture of Angular, setup simple project, data binding, then walks through forms, templates, routing and explains about Angular new features.

Key Features of Angular:

1. Component-Based Architecture:
   • Applications are built using reusable components, which encapsulate HTML, CSS, and TypeScript code for modular and maintainable development.
2. TypeScript Integration:
   • Angular uses TypeScript, a statically typed superset of JavaScript, offering features like type checking, interfaces, and better tooling.
3. Two-Way Data Binding:
   • Angular synchronizes data between the model (business logic) and the view (UI) in real time.
4. Dependency Injection:
   • Built-in dependency injection simplifies the development of services and enhances code reusability and testing.
5. Directives:
   • Angular provides structural (e.g., *ngIf, *ngFor) and attribute directives (e.g., [ngClass]) to dynamically modify the DOM.
6. Reactive Programming:
   • Angular supports reactive programming with RxJS, enabling efficient handling of asynchronous operations and event streams.
7. Powerful Routing:
   • Angular’s router enables navigation between views, lazy loading, and nested routes.
8. Modular Design:
   • Applications can be split into modules for better organization, making it easier to manage and scale large projects.
9. Ahead-of-Time (AOT) Compilation:
   • Angular compiles the application during the build process, improving runtime performance and reducing potential errors.
10. Built-in Testing Tools:
    • Angular CLI integrates tools like Jasmine and Karma for unit and end-to-end testing.

Common Use Cases:

• Single Page Applications (SPAs) where users interact with a web app without needing to reload the entire page.
• Enterprise Applications requiring robust architectures.
• Progressive Web Applications (PWAs) for offline and app-like experiences.

Tools and Ecosystem:

• Angular CLI: A command-line interface tool for automating development tasks like project setup, building, and deployment.
• Angular Material: A UI component library for building responsive and visually appealing designs.
• RxJS: For handling reactive data streams.

If you’re familiar with web development frameworks like React or Vue, Angular is comparable but distinguishes itself with its opinionated structure and TypeScript-first approach.

This content is prepared for professionals who are aspiring to make a career in the field of Web application developer. Before proceeding with the various types of concepts given in this tutorial, we assume that you have the basic knowledge on HTML, CSS and OOPS concepts. In addition to this, it will be very helpful, if the readers have a sound knowledge on TypeScript and JavaScript.