Asynchronous Validation in Angular's Reactive Forms Control

I've been playing around with Angular for some time now. When it comes to building forms, I tend to go with reactive forms. In short, while using reactive forms; you create a form model consists of different form controls directly in your component class. Once you are done, you bind them (form controls) to your native form control elements defined in the component's view. But that is all about reactive forms and the official documentation talks at length about it here, I'm assuming that you…

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