Angular 8 CLI Installation

Course overview

Uplatz offers this comprehensive course on Angular: Create Powerful and Responsive Web Applications. It is a self-paced course with video lectures. You will be awarded Course Completion Certificate at the end of the course.

Angular is a TypeScript-based, open-source front-end framework developed and maintained by Google. It is used to build dynamic, scalable, and single-page web applications (SPAs). Angular follows a component-based architecture, making it modular, maintainable, and reusable.

Unlike libraries like React, which primarily focus on the view layer, Angular provides a complete framework with built-in tools for routing, forms, state management, and HTTP services.

With built-in tools for routing, forms, API handling, and state management, Angular is an excellent choice for large and complex applications that require robust architecture.

How Angular Works

Angular applications are built using TypeScript and HTML, structured into components, services, and modules. Here's how it works:

1. Modules & Components

   • Applications are divided into modules (NgModules) and components (UI elements).
   • Each component consists of an HTML template, TypeScript logic, and CSS styles.

2. Templates & Directives

   • Uses HTML-based templates enhanced with Angular directives (e.g., *ngFor, *ngIf) to dynamically display data.

3. Data Binding & Dependency Injection

   • Supports two-way data binding, allowing automatic updates between the UI and the underlying logic.
   • Uses Dependency Injection (DI) to manage dependencies efficiently.

4. Routing & Navigation

   • The built-in Angular Router enables navigation between different views without page reloads.

5. Services & HTTP Requests

   • Uses services to manage data and business logic.
   • The HttpClient module allows communication with external APIs.

6. State Management

   • Can use built-in services or external libraries like NgRx, Akita, or BehaviorSubject to manage application state.

7. Compilation & Optimization

   • Angular applications are compiled using Ahead-of-Time (AOT) Compilation, improving performance by converting TypeScript into optimized JavaScript before the browser loads it.

Key Features of Angular1. Component-Based Architecture

• Applications are divided into reusable components, making code modular and maintainable.

2. Two-Way Data Binding

• Synchronizes data between the UI and logic automatically, reducing manual DOM manipulation.

3. Directives & Templates

• Structural directives (*ngIf, *ngFor) control the DOM structure.
• Attribute directives (ngClass, ngStyle) modify element behavior and styles.

4. Built-in Dependency Injection (DI)

• Manages and shares services across components efficiently.

5. Powerful Routing System

• Angular Router enables seamless navigation between pages.

6. Form Handling (Template-Driven & Reactive Forms)

• Supports template-driven forms for simple use cases and reactive forms for complex scenarios.

7. HTTP Client for API Communication

• Built-in HttpClient module makes API calls easy and efficient.

8. Angular Universal for Server-Side Rendering (SSR)

• Improves SEO and initial page load speed by rendering pages on the server.

9. Ahead-of-Time (AOT) Compilation

• Compiles Angular applications at build time, reducing runtime errors and improving performance.

10. Extensive Ecosystem & CLI Support

• Angular CLI provides powerful commands for creating components, services, and modules quickly.
• Works with libraries like RxJS (Reactive Programming) and NgRx (State Management).

Benefits of Using Angular1. Full-Fledged Framework

• Unlike React, Angular provides a complete ecosystem with built-in tools for routing, HTTP services, and forms.

2. High Performance & Speed

• AOT compilation reduces runtime errors and boosts performance.
• Virtual DOM optimizations ensure efficient UI updates.

3. Enhanced Code Maintainability

• Strict TypeScript support reduces errors and improves debugging.
• Component-based structure makes applications scalable and modular.

4. Two-Way Data Binding

• Reduces boilerplate code and simplifies UI updates automatically.

5. SEO-Friendly with Angular Universal

• Server-side rendering improves page indexing and search engine optimization (SEO).

6. Enterprise-Ready

• Used by Google, Microsoft, IBM, PayPal, and Forbes, making it a preferred choice for large-scale applications.

7. Improved Security

• Built-in security features help prevent cross-site scripting (XSS) and injection attacks.

8. Strong Community & Long-Term Support

• Backed by Google with frequent updates and a large developer community.

9. Cross-Platform Development

• Works with Ionic to build mobile apps and PWAs (Progressive Web Apps).

10. Extensive Ecosystem & Third-Party Integrations

• Works with RxJS (Reactive Extensions), NgRx (State Management), Firebase, GraphQL, and more.