Input error management via JS

[sergeiavoroshilov]

Hello there!

I have a couple of ideas for implementing additional methods for inputs:

1. add a method to reset the error state using a JS script;
2. displaying custom error text using a JS script;

For example, we have an input field for a promo code, and if we apply an invalid code (checking on backend), we want to show an error to the user. Now we have to show a dialog. But it would be more clear for the user to highlight the field in red and add a red message at the bottom, as in a validation error.

[sergeiavoroshilov]

This this a feature request. I Don't know how to add label

[shastox]

1. Reset: setCustomValidity('')
2. Set error: setCustomValidity('error text');

And F7 method: validateInputs()