Creating Controllers in AngularJS
Learn how to create controllers in AngularJS to handle application logic and data binding within your web applications. Understand the basics of defining controllers and attaching them to your AngularJS application modules.
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In AngularJS, controllers play a pivotal role in managing the application's behavior and data. They serve as the bridge between the view (HTML) and the model (data). Here's a step-by-step guide on how to create controllers in AngularJS:
Defining a Controller
Set Up Your AngularJS Application: Ensure that you have included the AngularJS library in your project. You can either download it and reference it locally or use a CDN link.
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Create an AngularJS Module: Define an AngularJS module using angular.module(). This module will encapsulate your entire application.
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Add a Controller: Define a controller using the app.controller() method. This method associates a controller function with a specific AngularJS module.
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Attaching the Controller to HTML
Use ng-controller Directive: In your HTML file, attach the controller to a specific element using the ng-controller directive. This directive specifies which controller should be associated with the HTML element and its children.
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Example Controller
Putting it all together, here's a simple example of an AngularJS controller:
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In this example, we've defined an AngularJS module named myApp and attached a controller named myController to it. The controller sets a message on the $scope object, which is then displayed in the HTML using {{ message }} data binding.
This basic approach demonstrates how to create and use controllers in AngularJS. Controllers are fundamental for managing the application's logic and data flow, enabling developers to build dynamic and interactive web applications with ease.
