Angular 20 Installation and Setup
Angular 20 is the latest and most powerful release of Google’s frontend framework, offering improved performance, streamlined development, and standalone components support. This chapter will help you understand what Angular is, set up the development environment, and build your first Angular app step by step.
What is Angular?
Angular is a popular TypeScript-based frontend framework developed by Google. It allows developers to build single-page applications (SPAs) with a clean architecture and modular code. Unlike React or Vue.js, Angular is a full-fledged framework offering built-in routing, form handling, HTTP support, and dependency injection.
Key Features of Angular 20
- Standalone components by default
- Improved hydration and SSR performance
- Faster rendering and build optimizations
- Experimental Signals API for fine-grained reactivity
- Improved developer tooling and diagnostics
Node.js and npm Setup
Angular relies on Node.js and npm to manage dependencies and run development tasks. Installing Node.js will also install npm.
Step 1: Download Node.js
Visit https://nodejs.org/ and download the LTS version. Install it using default options.
Step 2: Verify Installation
node -v
npm -vInstalling Angular CLI (v20)
Angular CLI is a command-line interface for creating and managing Angular applications.
Install Globally
npm install -g @angular/cliCheck Installed Version
ng versionCreating Your First Angular Project
Step 1: Create a New Project
ng new my-first-appCLI will prompt for routing and CSS preferences. Choose options as needed.
Step 2: Navigate to Project Directory
cd my-first-appStep 3: Serve the App
ng serve --openThis opens your app at http://localhost:4200 in the browser.
Understanding Angular File Structure
Let’s understand the structure of your Angular project:
- e2e/: End-to-end test config
- src/: Source code of the application
- app/: Main module and components
- assets/: Static files (images, JSON, etc.)
- environments/: Configs for dev/prod
- angular.json: Angular CLI configuration
- package.json: Lists project dependencies
Running and Building Angular App
Development Server
ng serveBuild for Production
ng build --configuration productionUseful Angular CLI Commands
ng generate component xyz: Create componentng generate service xyz: Create serviceng test: Run unit testsng lint: Lint your codeng add @angular/material: Add Material UI
Troubleshooting Tips
Command Not Found
# macOS/Linux
export PATH=$PATH:$(npm bin -g)
# Windows
set PATH=%PATH%;C:\Users\YourName\AppData\Roaming\npmPermission Issues
sudo npm install -g @angular/cliConclusion
In this tutorial, you’ve learned how to install Angular 20, set up the CLI, and create your first app. You also explored the folder structure and learned how to run and build the application. Angular 20’s modern features and tools will empower you to build scalable and high-performance web applications.
Next Steps
In the next chapter, we’ll explore Angular Components, Templates, and Data Binding. You’ll learn how to build UI with reusable components and bind them with dynamic data.