I'm Todd, I teach the world Angular through @UltimateAngular. Conference speaker and Developer Expert at Google.

Introducing ngxErrors, declarative form errors for Angular

I’ve been working on an open source project to bring better validation to Angular’s reactive forms. In this post we’ll take a look at how to use it, why I...

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Configurable Reactive Forms in Angular with dynamic components

In this post we’re going to explore the creation of dynamic components alongside a Reactive Form setup. If you’re new to Reactive Forms, check out one of my previous posts...

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Angular constructor versus ngOnInit

Angular has many lifecycle hooks, as well as a constructor. In this post, we’ll quickly cover the differences between the ngOnInit lifecycle hook which has been the source of some...

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Getting started with Angular's Router

Angular’s router acts as the main hub of any application, it loads the relevant components relevant to the route requested, as well as dealing with fetching the relevant data for...

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Angular ngFor, <ng-template> and the compiler

Angular ngFor is a built-in Directive that allows us to iterate over a collection. This collection is typically an array, however can be “array-like”. To demonstrate this, we’ll be using...

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A deep dive on Angular decorators

Decorators are a core concept when developing with Angular (versions 2 and above). There’s also an official TC39 proposal, currently at Stage-2, so expect decorators to become a core language...

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Mastering Angular dependency injection with @Inject, @Injectable, tokens and providers

Providers in Angular are key to how we develop our applications, and injecting dependencies can be done in various ways. In this post, we’re going to debunk some terminology behind...

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Should you learn Angular 1.x or 2?

A question that I’m frequently asked, “should I learn Angular 1 or 2?”. I hope this post offers some insight, help and guidance into answering that question for you. No...

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TypeScript: the missing introduction

The following is a guest post by James Henry (@MrJamesHenry). I am a member of the ESLint Core Team, and a TypeScript evangelist. I am working with Todd on UltimateAngular...

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Building Tesla's battery range calculator with Angular 2 reactive forms

In this epic tutorial, we’re going to build some advanced Angular (v2+) components that rebuild Tesla’s battery range calculator and then compile it to AoT and deploy on GitHub pages....

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