Angular – Page 5 – Andreas Plahn Blog

Fixing Webstorm cant debug in Chrome error: “Please ensure that the browser was started successfully with remote debugging port opened”

Error message in Jetbrains Webstorm:

Waiting for connection to localhost:59066. Please ensure that the browser was started successfully with remote debugging port opened. Port cannot be opened if Chrome having the same User Data Directory is already launched.

Can be fixed by installing the “jetbrains ide” chrome extension and make sure the above settings checkbox is active “Use JetBrains IDE support extension…”

Expecting the Unexpected — Best practices for Error handling in Angular

Source: Expecting the Unexpected — Best practices for Error handling in Angular

Using Renderer2 in Angular

The Renderer2 class is an abstraction provided by Angular in the form of a service that allows to manipulate elements of your app without having to touch the DOM directly. This is the recommended approach because it then makes it easier to develop apps that can be rendered in environments that don’t have DOM access, like on the server, in a web worker or on native mobile.

Source: Using Renderer2 in Angular

Four ways of listening to DOM events in Angular (Part 1: Event Binding)

Source: Four ways of listening to DOM events in Angular (Part 1: Event Binding)

Angular – RadioControlValueAccessor

Using radio buttons with reactive form directives

The follow example shows how to use radio buttons in a reactive form. When using radio buttons in a reactive form, radio buttons in the same group should have the same formControlName. Providing a name attribute is optional.

Source: Angular – RadioControlValueAccessor

3 Ways to Pass Async Data to Angular 2+ Child Components ― Scotch.io

Let’s start with a common use case. You have some data you get from external source (e.g. by calling API). You want to display it on screen.However, instead of displaying it on the same component, you would like to pass the data to a child component to display.The child component might has some logic to pre-process the data before showing on screen.
…
Solution 1: Use *ngIf
Solution 2: Use ngOnChanges
Solution 3: Use RxJs BehaviorSubject

Source: 3 Ways to Pass Async Data to Angular 2+ Child Components ― Scotch.io

Angular: Tips. The importance of Pipes – codeburst

What we all like in Angular primarily is that it all mostly about templates. Templates are smart, dynamic, they use change detection to update themselves on a moment’s notice when a model is updated, the can manage HTML elements and nested components, enrich the markup with directives and make on-the fly data transformations, and the template syntax is amazing. The tools provided are vast and rich, but is it up to us to use them wisely.

Source: Angular: Tips. The importance of Pipes – codeburst

Angular + Redux — The lesson we’ve learned for you

Gotchas from using Angular with Redux:

Source: Angular + Redux — The lesson we’ve learned for you – Supercharge’s Digital Product Development Guide – Medium

Deploy an Angular Application to IIS – Angular In Depth

Getting your Angular Router application actually working in a non-root folder on Internet Information Services

The Angular Router is a fantastic module for Single Page Apps. However, to deploy it in a Production scenario you will typically need to do some configuration to make it work. This article details the steps necessary to deploy an Angular Router application anywhere on Internet Information Services (IIS).

Source: Deploy an Angular Application to IIS – Angular In Depth

Working with Angular Reactive Forms and Radio Button / Checkbox inputs

Some good links regarding setup, validation, detecting changes etc.

Creating forms and fetching values: Angular 2 Radio Button and Checkbox Example

Creating forms dynamically with FormBuilder: (e.g. from code/json data) https://angular.io/guide/reactive-forms#generating-form-controls-with-formbuilder

Listen to changes: https://alligator.io/angular/reactive-forms-valuechanges/

Official doc: https://angular.io/guide/reactive-forms#reactive-forms