Introduction to Angular JS programming – Part 2
In Part 1 of this series, we covered the basics of Angular JS programming and how to set up a development environment. In Part 2, we will delve deeper into the key concepts of Angular JS and learn about the various features and functionalities it offers.
Directives
One of the key features of Angular JS is its powerful directive system. Directives are markers on a DOM element that tell Angular’s HTML compiler to attach a specified behavior to that element. Angular comes with a set of built-in directives, such as ngModel, ngBind, ngIf, ngFor, etc. But you can also create your own custom directives to extend the functionality of your application.
Controllers
Controllers are a fundamental building block of Angular JS applications. They are used to manage the application’s data and behavior. In Angular, a controller is a JavaScript function that takes $scope as a parameter. $scope is an object that refers to the application model. It acts as the glue between the view and the business logic of the application.
Services
Services are singleton objects that can be used to organize and share code across the application. They are used to encapsulate reusable business logic and data that can be shared among different parts of the application. Angular JS comes with many built-in services, such as $http, $location, $timeout, etc. You can also create your own custom services to meet the specific needs of your application.
Routing
Routing is the process of determining which views and controllers to display based on the current URL. Angular JS comes with its own routing system that allows you to create single-page applications with multiple views. You can define routes using the $routeProvider service and configure how the application behaves based on different URL patterns.
Conclusion
Angular JS is a powerful and flexible framework for building dynamic web applications. In this article, we covered some of the key concepts of Angular JS, such as directives, controllers, services, and routing. In the next part of this series, we will dive into more advanced topics, such as dependency injection, testing, and performance optimization.
