Reactive Form Validation in Angular: Mastering Best Practices

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Learn how to do reactive form validation in Angular correctly without any additional libraries. We will use standard validators, write custom validators and configure them as well as async validators which can work with API.

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0:00 Introduction
1:29 Standard validators in Angular
6:39 Custom validators in Angular
10:05 Async custom validators in Angular

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I always find something new for me in your videos. Pretty good work. Thanks!

advance

good tutorial thank you! could you also provide the Angular version you are using ? would be nice to know that at the beginning of the tutorials, or did I maybe miss it somewhere?

RomanWaves

this is nice, in order to unbloat the file i would suggest creating an error component that takes an the errors and formControls and displays them when ever error happens.
with the right modularity this could save some massive time and allow you DRY code.
(this is not the subject i know )

TeddyEDMOND-pu

Why did you write the custom validation functions outside the class component? Are there any pros and cons for that?

manojv

@if decorator is not working in angular 15. what is the issue?

sohailnaseer

So...do reactive forms work in a zoneless environment?

BrendanAlexander

Why not use form field getter in component ts for example
`get firstName(): AbstractControl {
return this.form.get('firstName');
}`

TurboSasa

What if I only want the errors to show when I click outside and not when I'm am still typing so that I will not get distracted or slightly pissed off that I haven't finished typing yet.

chickenjoy

whats the difference with

form = new FormGroup({
name: new FormControl(null, [Validators.required, Validators.minLength(8)])
desc: new FormControl(null)
})

fadil

"my speak english very bad. So, my name is Boris. I gotta go home to Albania to work on war factory and build tanks. London is a capital of Great Britain!" Damn, dude, I know it is very important to support all kinds of spreading knowledges, but at first you should work on your English pronunciation and only then play role of youtube blogger. My ears are bleeding right now! And I am still silent about how you look (not event close to Brad Pitt). If it is so necessary to practice English or acting or acting in English, there are so many platforms for it. I don't think that non-public frontend work for IT company brings less income than blogging (but who knows I am not an Angular blogger from USSR). For Christ's sake.

matthewfreedberg

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