has-danger no longer working on Bootstrap v4 beta?

Question

According to the Bootstrap migration guide:

Renamed .has-error to .has-danger.

However, that doesn\'t seem to work. Border and t

Answer 1

Being that Bootstrap 4 is still in Beta, much of the migration documentation is not in sync with actual releases. Validation has changed in beta, and has-danger no longer exists.

Also see: Can't make the validation work in Bootstrap 4