How to Create Components in Angular 9

We can think of Angular Components like LEGO pieces. We create a component once but can use them multiple times in different
An Angular app is a tree structure consisting of all those components that we create, like how we make a Lego Structure from little Lego pieces.

Components are the most basic UI building block of an Angular app. An Angular app contains a tree of Angular components.— Angular official docs

In this article we will learn how to Create Components in Angular 9, use the generate component command of Angular CLI, or its shortcut shortcut command, for creating Angular components in your project.

How to Use ng generate component or ng g c

Let’s assume we want to create a Angular component named family
Open a new command-line interface, navigate into the root of your Angular project and run the following command:

$ ng generate component family

Or you can also run the following command:

$ ng g c family

Angular CLI will generate 4 files for the component in the src/app folder of your project:

/family/family.component.ts       # Component class
  /family/family.component.html     # Component template
  /family/family.component.css      # Component styles
  /family/family.component.spec.ts  # Component tests

We can also customize where the component’s files are placed.

Angular CLI adds the component to the declarations array of the module.

@NgModule({
  // [...]
  declarations: [ AppComponent, FamilyComponent ]
  // [...]
})
export class AppModule { }

This will allow FamilyComponent in any component in the AppModule.

How to Customize the Output of ng generate component

By default the ng generate component or ng g c commands, generate a folder and four files for the component. But you can change the default behavior if you want in two ways:

Using flags with the command,
Using the angular.json configuration file.

Using Flags with the ng generate command
Let’s generate an about component without a subfolder and without the specification file.

Head back to the terminal and run the following command:

$ ng generate component about --flat=true --spec=false

Using the angular.json File

Let’s now see by example how to configure the CLI from the angular.json file to not generate .spec.ts file for a component.

Go back to your terminal and run the following command:

$ ng config schematics.@schematics/angular:component.spec false

How to Set the Component’s Folder

You can aso define the folder of the component by specefying the path as follows:

$ ng generate component components/contact

This will create the contact component inside the components folder which will also be created if it doesn’t exist inside the src/app folder of the project.

Manually Creating Components

You can also create Angular components manually by creating the necessary files and add the component’s class to the declarations array of the module where it should be used.

Angular CLI Naming Conventions

When you create an Angular component with Angular CLI, it will follow these conventions:

The Component suffix is added to the name you submit for the component.
The app- prefix is added to the selector of the component.
The name of the component class is in upper camel case,

That’s what this article wants to share with you on how to create components in Angular using the ng generate component command or its ng shortcut shortcut command.

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Thanks for reading !

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Install Angular - Angular Environment Setup Process

Angular is a TypeScript based framework that works in synchronization with HTML, CSS, and JavaScript. To work with angular, domain knowledge of these 3 is required.

1. Installing Node.js and npm
2. Installing Angular CLI
3. Creating workspace
4. Deploying your First App

In this article, you will get to know about the Angular Environment setup process. After reading this article, you will be able to install, setup, create, and launch your own application in Angular. So let’s start!!!

Install Angular in Easy Steps

For Installing Angular on your Machine, there are 2 prerequisites:

• Node.js
• npm Package Manager

Node.js

First you need to have Node.js installed as Angular require current, active LTS or maintenance LTS version of Node.js

Download and Install Node.js version suitable for your machine’s operating system.

Npm Package Manager

Angular, Angular CLI and Angular applications are dependent on npm packages. By installing Node.js, you have automatically installed the npm Package manager which will be the base for installing angular in your system. To check the presence of npm client and Angular version check of npm client, run this command:

1. npm -v

Installing Angular CLI

• Open Terminal/Command Prompt
• To install Angular CLI, run the below command:

1. npm install -g @angular/cli

· After executing the command, Angular CLI will get installed within some time. You can check it using the following command

1. ng --version

Workspace Creation

Now as your Angular CLI is installed, you need to create a workspace to work upon your application. Methods for it are:

• Using CLI
• Using Visual Studio Code

1. Using CLI

To create a workspace:

• Navigate to the desired directory where you want to create your workspace using cd command in the Terminal/Command prompt
• Then in the directory write this command on your terminal and provide the name of the app which you want to create. In my case I have mentioned DataFlair:

1. Ng new YourAppName

• After running this command, it will prompt you to select from various options about the CSS and other functionalities.

• To leave everything to default, simply press the Enter or the Return key.

#angular tutorials #angular cli install #angular environment setup #angular version check #download angular #install angular #install angular cli

Angular Sass: How To Use Sass In Angular 9 Tutorial

Angular supports Sass, CSS, and Less to style global application styles as well as component styles. Angular components styles have an effective CSS encapsulation mechanism that assures any component CSS is local to the component and does not globally alter any styles.

Angular Sass Example

Why use Angular Sass? Well!! Sass (Syntactically Awesome Style Sheets) is an extension of CSS that allows you to use things like variables, nested rules, inline imports, and more. It also supports you to keep things organized and enables you to create style sheets faster.

In short,  Sass is a CSS preprocessor, which combines unique features such as variables, nested rules, and mixins (sometimes referred to as syntactic sugar) into regular CSS. The main object of Sass is to make the CSS coding process more comfortable and more efficient.

Sass is compatible with all versions of CSS. When working with the Angular CLI, the default stylesheets have the .css extension. We are using Angular CLI 8. So, if you have not used previously, then please upgrade your  CLI version. We will use the Bootstrap 4 Framework for this demo and see how we can configure the Sass in our Angular 9 application.

#angular #angular 9 #angular cli #css #angular sass

Angular 9 Components | What is a Component, How to Create And Use It?

Learn what an Angular Component, how to create a component by using Angular CLI, and an example for using the component with String Interpolation.

In the second video of Angular for Beginners tutorial series, you’re going to learn how to create a component by using Angular CLI, and an example for using the component with String Interpolation. OMPONENTS

#angular #angular 9

Angular 9 CRUD by Example

Throughout this Angular 9 CRUD tutorial, we’ll be learning to implement CRUD operations by example using the latest Angular 9 version that has been released recently with Ivy support.

> ✋✋ Join our Facebook group 👈 to discuss anything related to Angular development.

We’ll make use of a CRUD REST API built using json-server which allows you to generate a full working REST API in no time.

What’s CRUD?

CRUD stands for Create, Read. Update and Delete — a set of operations often implemented in web apps to allow users to interact with a database.

In our tutorial, we’ll only focus on building the front-end using Angular 9, the back-end will be mocked using json-server.

We’ll not be learning how to use json-server but you can see the complete instructions from this tutorial after creating the Angular 9 project.

Angular 9 CRUD Tutorial Steps

• Step 1 — Mocking the Backend Using json-server
• Step 2 — Creating an Angular 9 Module
• Step 3 — Importing Angular HttpClientModule and FormsModule
• Step 4 — Creating Angular 9 Component(s)
• Step 5 — Adding Angular 9 Routing
• Step 6 — Creating an Angular 9 Service
• Step 7 — Creating a Model
• Step 8 — Implementing the CRUD Methods
• Step 9 — Calling the CRUD Methods

#angular #angular-9 #angular 9 crud

Create a Component Harness For Your Tests With Angular CDK

Learn how to create and consume a custom component harness using Angular CDK. With a step-by-step case study, we run it in unit tests and end-to-end tests.

Updated for Angular CDK and Angular Material version 9.2.

A component harness is a testing API around an Angular directive or component. Component harnesses can be shared between unit tests, integration tests, and end-to-end tests. They result in less brittle tests as implementation details are hidden from test suites.

#angular #angular-cdk #component-harnesses #testing #angular-material