Angular Component

In Angular, a component is a reusable piece of UI (User Interface) that represents a view or a part of a view. Components are the building blocks of an Angular app, and they are responsible for displaying the data and handling user interactions.

Components are defined using a class and a template, and they can be used to display dynamic data and to bind to user input events. Components can also be customized and extended using inputs and outputs, and they can communicate with other components and services using dependencies.

Example of Component

Here is an example of a simple component in Angular:

import {Component} from '@angular/core'; 
	 selector: 'app-my-component',
	 template: `
			<h1>{ {title}}</h1> 
			<p>{ {description}}</p> 
			<button (click)="onClick()">Click me</button> 
export class MyComponent {	 
	title = 'My component'; 
	description = 'This is a description of my component'; 
	onClick() {
		console.log('Button was clicked'); 

In this example, the MyComponent component has a template that contains a title, a description, and a button, and it has a class that defines the data and behavior of the component. The component uses interpolation and event binding to display the data and handle the click event of the button.

Components can also be composed of other components, and they can be used to build complex and reusable UI elements. Components can be organized and shared using modules, and they can be used to implement the UI of your Angular app.

Create Component in Angualar

To create a new Angular component, you can use the Angular CLI (Command Line Interface) tool.

First, make sure you have the Angular CLI installed on your system. If you don't have it already, you can install it by running the following command:

npm install -g @angular/cli 

Once the Angular CLI is installed, navigate to the root directory of your Angular project and run the following command:

ng generate component my-component 

This will create a new component called "my-component" in the "src/app" directory of your project. The component will consist of four files:

  • my-component.component.html: The template file for the component, written in HTML.
  • my-component.component.css: The stylesheet for the component, written in CSS.
  • my-component.component.ts: The component class, written in TypeScript. This is where you can define the properties and behavior of the component.
  • my-component.component.spec.ts: A unit test file for the component, written in TypeScript.

You can then use the component in your templates by using the component's selector, which is the HTML tag that represents the component. For example, if you want to use the "my-component" component in a template, you can do so like this:


You can also pass data to the component by using input bindings, like this:

<my-component [inputName]="inputValue"></my-component> 

And you can bind to events emitted by the component using output bindings, like this:

<my-component (outputName)="outputHandler($event)"></my-component> 

I hope this helps! Let me know if you have any other questions.