Angular JS Development

AngularJS is an open-source front-end web application framework developed by Google. It is used for building dynamic, single-page applications (SPAs) by extending HTML with additional features like two-way data binding, directives, and dependency injection. AngularJS is based on JavaScript and follows the Model-View-Controller (MVC) architecture, making it easier to build complex applications.

Angular JS offers several benefits, including:

• Two-Way Data Binding: Changes made to the user interface are automatically reflected in the model and vice versa, reducing the need for manual updates.
• MVC Architecture: AngularJS follows the MVC pattern, separating the logic, data, and view, making the code more organised and manageable.
• Directives: AngularJS allows you to extend HTML with custom tags and attributes to create reusable components, simplifying the development process.
• Dependency Injection: AngularJS comes with built-in dependency injection, which improves the maintainability and testability of the application.

Cross-platform Compatibility: Angular JS applications are compatible across all browsers and platforms.

Two-way data binding in Angular JS allows automatic data synchronisation between the model (JavaScript code) and the view (HTML). This means that when the data in the model changes, it automatically updates the view, and when the user interacts with the view, the model is updated as well. This reduces the need for complex DOM manipulation and simplifies the development process.

Directives are a powerful feature of Angular JS that allows you to extend HTML by creating custom tags, attributes, or elements. They are used to add behaviour to DOM elements. For example, you can create a directive that encapsulates a feature like a custom form input or a dynamic list, making your code more modular and reusable. Some common built-in directives in Angular JS include ng-model, ng-repeat, and ng-if.

Dependency Injection (DI) is a design pattern that allows Angular JS to manage the dependencies between different components in an application. It enables components to declare the services or objects they need, and Angular will automatically inject them when required. This improves code maintainability, testability, and scalability by reducing tight coupling between components.

AngularJS refers to the original version of Angular (1.x), whereas Angular (2 and above) is a complete rewrite and the modern version of the framework. Some of the key differences between AngularJS and Angular include:

• Architecture: Angular is based on components and uses a more modular architecture, whereas AngularJS follows the MVC pattern.
• Performance: Angular provides better performance than AngularJS due to its use of a faster change detection mechanism.
• Language: Angular uses TypeScript (a superset of JavaScript) for better tooling, while AngularJS uses JavaScript.
• Mobile Support: Angular provides better mobile support with improved performance, whereas AngularJS was not as optimised for mobile.

Angular JS uses the ngRoute module to handle routing in single-page applications. It allows you to define routes in your application and map them to specific views. When a user navigates to a particular URL, Angular JS dynamically loads the corresponding view and controller without needing a full page reload. This provides a smooth and seamless user experience typical of single-page applications.

Angular JS is not SEO-friendly out of the box because it relies heavily on JavaScript to render content. Since search engine crawlers may not execute JavaScript properly, they might not index the content rendered by Angular JS. However, solutions such as server-side rendering (SSR) or prerendering can be implemented to make Angular JS applications SEO-friendly. Angular Universal is a tool that enables server-side rendering for Angular applications to improve SEO performance.