Angular 5-Minute Tips: Angular Async Validator

This quick Angular tutorial teaches you how to use a REST Service to validate a reactive form control. You can also download the files and demos from this tutorial from github.com/t4d....

[@lordzole]

Thank you

[@TraderXO]

Lovely tutorial

[@estieramie]

This may be a long shot but how would one go about implementing debouncing? I've tried everything but this method is a little different from typical async validation I've seen and tried. But it's the only one that works for my use case. I can't afford to make dozens of api calls to my server so delay or debounce would be amazing. Thank you!

[@acd2377]

I have sync validation and async validation at the same control. Sync validation instantly returns error and form control turns red. Then, after a while, async validation returns null (no error) and form controls turns default color as if there were no errors. I dont know how to fix it. Did someone face this kind of problem? How did you deal with it?

[@Xinthose]

Angular’s asynchronous reactive form example with heroes is so much more complicated.

[@mounirdev9560]

thanks man

[@nestorjoelresendizsalvador3297]

Muy chido !! xP

[@jitheshchandra9088]

I did try the Async same way but the http does not fire at all

[@steveg917]

it always display me an error