Angular JS Certification – The Digital Adda
AngularJS is a JavaScript-based open-source front-end web application framework originally developed by Google. It is designed to make it easier to build dynamic, single-page web applications (SPAs) by providing a structured and comprehensive framework for handling various aspects of web development. Here are some key aspects of AngularJS:
- Modular Architecture:
- AngularJS encourages the modularization of your web application. It allows you to define reusable components and modules to organize your code effectively.
- Data Binding:
- AngularJS offers two-way data binding, which means that changes in the UI (view) are automatically reflected in the underlying data (model) and vice versa without the need for explicit DOM manipulation.
- Directives:
- Directives are special markers in the HTML that tell AngularJS to attach specific behavior to a DOM element or to transform the DOM in some way. Common directives include ng-model, ng-repeat, and ng-show.
- Dependency Injection:
- AngularJS has a built-in dependency injection system that simplifies the management of component dependencies and promotes modularity and testability.
- Templates:
- AngularJS uses HTML templates with additional markup to create dynamic views. Templates are used to define the structure of the UI and to bind data to the view.
- Controllers:
- Controllers are JavaScript functions that provide the business logic for a part of your application. They are responsible for setting up the initial state and behavior of the $scope object, which is used for data binding.
- Services:
- AngularJS services are singletons that can be used to share data and functionality across different parts of an application. They are often used for making HTTP requests, managing application state, or performing other common tasks.
- Routing:
- AngularJS includes a built-in routing system that allows you to create SPAs with multiple views. You can define routes and associate controllers and templates with each route.
- Validation and Form Handling:
- AngularJS provides tools for form validation, making it easier to create interactive and user-friendly forms with validation rules.
- Testing:
- AngularJS includes built-in support for testing, making it possible to write unit tests and end-to-end tests for your application.
- Filters:
- Filters in AngularJS allow you to format and manipulate data before it is displayed in the view. Common filters include currency, date, and filter.
- Security:
- AngularJS helps mitigate security vulnerabilities such as Cross-Site Scripting (XSS) by automatically sanitizing data bindings.
- Community and Ecosystem:
- AngularJS has a large and active community with extensive documentation, tutorials, and third-party libraries available to support development.
It’s important to note that AngularJS (often referred to as “Angular 1”) is different from Angular (commonly known as “Angular 2” and later versions), which is a complete rewrite of the framework with significant architectural changes. As of my knowledge cutoff date in September 2021, Angular is the more current and recommended choice for new web application development, while AngularJS is still in use for legacy projects. Developers should be aware of these distinctions when choosing a framework for their projects.
