Introduction_to_AngularJS............pptx
- 1. Introduction to AngularJS • AngularJS is a JavaScript-based open-source front-end web framework. • Developed by Google. • Used for building dynamic web applications. • Supports MVC architecture. • Enhances HTML with additional attributes.
- 2. History of AngularJS • Initially released in 2010. • Created by Misko Hevery and maintained by Google. • AngularJS 1.x is the original version. • Superseded by Angular (2+). • Still used in legacy applications.
- 3. Key Features • Two-way data binding. • Dependency injection. • Directives for extending HTML. • Templates for dynamic views. • Routing for single-page applications.
- 4. MVC Architecture • Model: Manages data and business logic. • View: Displays data to the user. • Controller: Connects model and view. • AngularJS implements MVC internally. • Promotes separation of concerns.
- 5. Directives • Special tokens in HTML. • Examples: ng-model, ng-bind, ng-repeat. • Used to create custom HTML tags. • Enhance HTML functionality. • Enable reusable components.
- 6. Expressions • Used to bind data to HTML. • Written inside double curly braces {{ }}. • Can perform operations like addition. • Automatically updated with model changes. • Used in templates and views.
- 7. Modules • Containers for different parts of an app. • Defined using angular.module(). • Can include controllers, services, filters. • Promotes modular development. • Helps manage dependencies.
- 8. Controllers • Defined using angular.controller(). • Attach data and behavior to the scope. • Used to control the flow of data. • Can be reused across views. • Work with services and models.
- 9. Services • Reusable business logic components. • Defined using angular.service() or angular.factory(). • Used for data sharing across controllers. • Examples: $http, $location. • Promotes code reuse and modularity.
- 10. Routing • Implemented using ngRoute module. • Enables single-page application behavior. • Maps URLs to views and controllers. • Defined using $routeProvider. • Improves user experience.
- 11. Forms and Validation • Supports form controls like input, select. • Built-in validation directives. • Real-time feedback to users. • Custom validation rules possible. • ng-model binds form data to scope.
- 12. Filters • Format data for display. • Examples: currency, date, uppercase. • Can be chained together. • Custom filters can be created. • Used in templates and controllers.
- 13. Dependency Injection • Design pattern for managing dependencies. • AngularJS injects services automatically. • Improves testability and modularity. • Reduces coupling between components. • Used in controllers, services, directives.
- 14. Advantages of AngularJS • Simplifies development of dynamic web apps. • Rich set of features and tools. • Strong community support. • Backed by Google. • Supports test-driven development.
- 15. Conclusion • AngularJS is a powerful front-end framework. • Ideal for building single-page applications. • Offers modular and maintainable code. • Still relevant for legacy systems. • Angular (2+) is recommended for new projects.