Learn ANGULAR with Real Code Examples

Updated Nov 21, 2025

Explain

Angular allows developers to build modular, scalable, and maintainable web applications.

It uses TypeScript for strong typing and modern JavaScript features.

Angular employs a component-based architecture for reusable UI and logic.

Core Features

Modules for code organization

Services for business logic

Directives for dynamic DOM manipulation

Routing for SPA navigation

Reactive forms and template-driven forms

Basic Concepts Overview

Components and templates

Modules and NgModule

Services and dependency injection

Data binding: interpolation, property, event, two-way

Directives: structural and attribute

Project Structure

src/app/ - main application code

src/assets/ - static files

src/environments/ - environment configuration

angular.json - build configuration

package.json - dependencies and scripts

Building Workflow

Generate components, services, and modules with Angular CLI

Write HTML templates with Angular directives

Manage state and events with services or RxJS

Use Angular Router for navigation

Build production bundle with `ng build --prod`

Difficulty Use Cases

Beginner: simple component-driven apps

Intermediate: SPAs with routing and forms

Advanced: Reactive apps with RxJS

Expert: Large-scale enterprise applications

Community: contributing to Angular libraries or CLI

Comparisons

More structured than React or Vue for large apps

Stronger typing with TypeScript than plain JS frameworks

Enterprise-friendly with CLI and tooling

Larger bundle size than lightweight frameworks

Supports reactive programming better than jQuery

Versioning Timeline

2010 – AngularJS (1.x) released

2016 – Angular 2+ rewritten from scratch

2017 – Angular 4 released (skipped version 3)

2020 – Angular 10 released

2025 – Angular 16+ with Ivy and modern updates

Glossary

Component: reusable UI unit

Module: encapsulates related functionality

Service: singleton logic and data provider

Directive: modifies DOM behavior

RxJS: reactive programming library used in Angular