Introduction to Angular
What is Angular?
Angular is a platform and framework for building single-page client applications using HTML and TypeScript. It is developed and maintained by Google and is designed to make both the development and testing processes easier.
Angular is a complete rewrite from the same team that built AngularJS.
Key Features
- Component-based architecture
- Dependency injection
- Two-way data binding
- Routing
- RxJS for reactive programming
Angular Architecture
Angular is built on a modular architecture, and its core components include:
- Modules: Containers for a cohesive block of code dedicated to an application domain, a workflow, or a closely related set of capabilities.
- Components: The building blocks of Angular applications. A component controls a patch of screen called a view.
- Templates: Define the view for a component. They are written in HTML and can include Angular directives.
- Services: Used to share data and functionality across components.
Getting Started
Step 1: Install Angular CLI
npm install -g @angular/cli
Step 2: Create a new Angular project
ng new my-angular-app
Step 3: Run the Angular application
cd my-angular-app
ng serve --open
Best Practices
When developing applications with Angular, consider the following best practices:
- Use Angular CLI for project scaffolding.
- Keep components small and focused.
- Use services for business logic and data handling.
- Leverage observables for handling asynchronous data.
- Write unit tests for components and services.
FAQ
What is the difference between Angular and AngularJS?
AngularJS is the original version of the framework, built using JavaScript. Angular (Angular 2+) is a complete rewrite of AngularJS, built using TypeScript and offers a more modern approach to web development.
Is Angular suitable for large applications?
Yes, Angular is designed for building scalable web applications and is widely used in enterprise-level applications.
What is TypeScript?
TypeScript is a superset of JavaScript that adds static types. Angular is built using TypeScript, which helps catch errors early in the development process.