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Today in Top Angular News – Friday, February 22

Today in Top Angular News – Friday, February 22

Today’s topics include javascript, Angular, ASPNETCore, medium, freeCodeCamp, article, angularjs, filter, html5, json, webcomponents, vue, and react. Special thanks to contributors @NetanelBasal, Netanel Basal, @andrew_evans, Andrew Evans, Bertrand THOMAS, @codein, Daniel, +Juri Strumpflohner, Juri Strumpflohner, @lcjfifty, Luke Joliat, geekstrick, webcodegeeks, ahmed-bouchefra, tamas-piros, JavaScriptLab, AngularDenver, @jtcrowson, John Crowson, JAXenterCOM, and Cory Rylan.


Testing Observables in Angular – Netanel Basal

todos component specWe have data service that uses the Angular HTTP library to return cold observable. You probably remember the old days, when we wrote tests in AngularJS and stub promises like code above is completely valid — unlike observables, promises are always asynchronous. todos component specWe use defer() to create a block that is only executed when the resulting observable is subscribed to. Marble testing uses a similar marble language to specify your tests’ observable streams and expectations. todos component specThis test defines a cold observable that waits two frames (–), emits a value (x), and completes (|). Continue reading


How the Angular Fire Library makes Firebase feel like Magic

As of this writing, AngularFire provides connections to the following Firebase services:
Authentication
File Storage
Cloud Firestore (NoSQL Database)

The Authentication Service provides OAuth through multiple providers. The following screenshot shows what is available in the console once you setup your Firebase App:
AngularFire provides realtime updates through observable streams and is highly optimized. Firebase Groceries
(screenshot of the grocery list app we’re going to review)In order to showcase AngularFire, I’m going to refer to a basic grocery list app that can be viewed here. I used the async pipe with the AngularFireAuth object in the grocery list app as follows:
As you can see, the *ngIf checks on the state of the user observable with the async pipe to determine when to show content when a user is logged in. When working with this data in your code you create observablecollection and document objects which stream updates directly to your app from the database. Continue reading


Create an Angular 7/ASP.NET Core 2.2 Application and Push it to Azure – DZone Web Dev

The source code is available on GitHub: There will also be links to the live demo, as well as the build and deployment pipelines. Open “Visual Studio 2017” and click on “Create new project…” A small wizard will help you create the first project. Go in “.NET Core” and select “ASP.NET Core Web Application,” edit the name, location (where you did the git clone), and solution name. Click on the link “Use the visual designer,” select the “source” (git repository), gives an authorization if it’s the first time it’s done. In “Azure DevOps,” go to “Pipelines” & “Releases,” and create a new pipeline. Continue reading


How to replace Vue with Angular in a Laravel project (part 1 of 2)

However, if you already have everything installed (and you don’t need a refresher in either Angular and Laravel setup), you can jump to the end of the article where I plant the seed for the second article. Install Angular
To have Angular installed globally on your machine, head to the command prompt of your preference (here I am showcasing the Windows Powershell):

npm install -g @angular/cliInstall PHP
Option 1 — MAMP or XAMPP
Navigate to https://www.mamp.info/ and install the latest version running the executable. To get started, run this command on your terminal:
laravel new todo-appJump into your directory recently created (“cd todo-app”) and open your VS Code editor (by typing “code .”) You should have this folder structure ready:
Now jump into the terminal once again and see your Laravel project up and running by typing:
php artisan serveAnd going to the above-mentioned port you will find:
Laravel does not initialize the project with a GIT repository, so I advise you doing so by simply typing in your terminal:
git init
git add . git commit -m "initial commit"
git logInitializing your local repoMaking sure your repo setup is working fineLet’s finish this first article by installing Angular and having it saved inside the Laravel project. Continue reading


First baby steps with Angular.js

On the controller you then inject the service as follows:

Variables prefixed by are those provided by Angular. An Angular module is defined like

This example code shows the definition of the application in . The folder structure looks like

Each of the other files like the controller and service have to be defined within that module. Finally, needs to load the module (in ):

What’s kind’a odd is that although is defined within the module, you don’t have to prefix it in the HTML code:

Wait, this might get tricky and lead to potential name clashes when including multiple modules. The “model” of Angular is somehow the combination of , the data binding and the services if we wish. Continue reading

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