Angular tutorial - Component basics
Angular Tutorial: Component Basics | CODiiN Tutorial 🚀
👉 Welcome back to our Angular Training Series! In this tutorial, we'll dive into the basics of Angular components, which are the building blocks of Angular applications. Understanding components is crucial for creating dynamic, interactive web applications.
🌟 What is a Component?
In Angular, a component is a fundamental unit of the application that encapsulates:
HTML template: Defines the view of the component.
CSS styles: Applies styles specific to the component.
TypeScript class: Contains the logic and data for the component.
Each component controls a patch of the screen called a view. Components can be nested, reused, and composed to create complex UIs.
🔍 Key Features of Components:
Encapsulation: Components encapsulate their own functionality, making them reusable and maintainable.
Data Binding: Angular provides data binding mechanisms to communicate between the component class and its template.
Lifecycle Hooks: Angular components have lifecycle hooks that allow you to tap into specific moments in a component's lifecycle (e.g., ngOnInit, ngOnChanges).
🛠️ Creating Your First Component:
Generate a New Component
Understand the Generated Files:
The Angular CLI will create a new folder within the src/app directory with the following files:
my-first-component.component.ts: Contains the component's logic.
my-first-component.component.html: The template for the component.
my-first-component.component.css: The styles for the component.
my-first-component.component.spec.ts: A file for unit testing the component.
Update the Component Class:
Open my-first-component.component.ts and define properties and methods that control the component's behavior.
Modify the Template:
Open my-first-component.component.html and add some HTML to display the component's content.
🎉 Running Your Application:
After setting up your component, run your Angular application
Navigate to http://localhost:4200/ in your web browser to see your new component in action!
📈 What’s Next?
Now that you have a basic understanding of components, the next tutorial will explore Component Interaction, where you'll learn how to communicate between components using Input and Output properties.
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