Angular FAQ: Top Questions

Angular CLI (Command Line Interface) is a powerful tool provided by the Angular team to streamline the development workflow for Angular applications. It helps developers scaffold components, services, modules, and other Angular constructs, as well as build, serve, test, and deploy applications with simple commands.

Angular CLI enforces best practices, maintains consistency across codebases, and reduces the time required to set up and maintain Angular projects manually.

• Project Scaffolding:
  • Generate Angular applications with a clean structure using the ng new command.
  • Quickly add components, services, directives, pipes, modules, and more using generation commands like ng generate.
• Development Server:
  • Run a live development server with ng serve for real-time feedback as you develop.
  • Supports hot module replacement and automatic browser reloading.
• Optimized Builds:
  • Easily create production-ready builds with ahead-of-time compilation, tree-shaking, and bundling using ng build --prod.
  • Generates highly optimized assets for deployment.
• Testing Utilities:
  • Set up and run unit tests using ng test and end-to-end (E2E) tests using ng e2e.
  • Built-in support for tools like Karma, Jasmine, and Protractor.
• Linting & Configuration:
  • Maintain code quality with ng lint.
  • Customize project settings with easy-to-manage configuration files like angular.json, tsconfig.json, and package.json.

# Create a new Angular project
ng new my-app

# Navigate into the project directory
cd my-app

# Generate a new component called 'header'
ng generate component header

# Start the development server with live reload
ng serve
        

Explanation of the Example Code:

• ng new my-app scaffolds a new Angular project with a ready-to-run structure, dependencies, and configuration.
• cd my-app changes the directory to the newly created project folder.
• ng generate component header creates a new component with all required files and automatically registers it in the module.
• ng serve launches a development server at http://localhost:4200 and watches for file changes.

Angular CLI simplifies common development tasks and helps teams maintain scalable, consistent, and high-quality Angular projects from start to finish.