AngularJS - JavaScript

AngularJS is a powerful JavaScript framework that is primarily used for building single-page applications. It provides developers with a comprehensive set of tools and features to simplify the development process and enhance the functionality of web applications.

Features

Here are some key features of AngularJS:

1. Two-way Data Binding: AngularJS provides two-way data binding, which means any changes in the model are automatically reflected in the view, and vice versa. This allows for a seamless synchronization between the data and the UI.

2. Modularity: AngularJS promotes modularity by dividing the application into multiple modules, each responsible for a specific functionality. This makes it easy to maintain and test different parts of the application independently.

3. Dependency Injection: AngularJS has a built-in dependency injection system that helps manage the dependencies between different components. This allows for easier unit testing and promotes code reusability.

4. Directives: AngularJS allows you to extend HTML with new attributes, called directives. Directives are used to create reusable components and enhance the functionality of HTML elements. AngularJS comes with a set of built-in directives, and you can also create your own custom directives.

5. Templates and Views: AngularJS uses templates to define the structure and layout of the application's UI. It supports dynamic rendering of views based on the current state of the application.

6. Routing: AngularJS provides a powerful routing mechanism that allows you to define different routes for different views of your application. This enables the creation of multi-page applications within a single page.

7. Testing: AngularJS has robust testing capabilities built-in. It provides tools and libraries for unit testing, integration testing, and end-to-end testing of AngularJS applications.

Code Sample

Here is a code snippet showcasing the basic structure of an AngularJS application:

// Define a module
var app = angular.module('myApp', []);

// Define a controller
app.controller('myController', function($scope) {
    $scope.message = 'Hello, AngularJS!';
});

// Define a directive
app.directive('myDirective', function() {
    return {
        restrict: 'E',
        template: '<div>{{ message }}</div>',
        link: function(scope, element, attrs) {
            // Custom directive logic
        }
    };
});

The above code creates an AngularJS module, defines a controller within the module, and also creates a custom directive. The controller sets a message in the scope, which is then displayed using the directive's template.

This is just a basic example, and AngularJS offers many more features and capabilities to build rich and interactive web applications.

To learn more about AngularJS, refer to the official documentation: AngularJS Documentation