how to make required plane text fields or required firsrtName and lastName fields in users profile? I want to during the registration and profile changes were required. Maybe there is any plugin for this?
For custom fields that you add to
settings>users>fields, you can control whether the field is required by clicking on the small gear icon and selecting
make required. With built-in fields such as
make required cannot be controlled. Within the CP, at least, you would need to look for a plug-in solution.
.on('change') functionality for more info.