Hello! How do I set a mask for entering a number on the registration page? Did someone manage to implement it? On the publishing and editing page, everything quickly turned out with the help of "jquery.maskedinput.js."....

Follow installation guide of that script.

there is no input field on the registration page that can be assigned an id

@atba
you can use class, name, ...

<label for="phone"><?php _e('Mobile Phone', 'veronika'); ?></label> <span class="input-box last"><i class="fa fa-phone"></i><?php UserForm::mobile_text(osc_user()); ?></span>


объясните пожалуйста, то я здесь могу присвоить . Спасибо

the problem is solved..... just do not need to shove the plugin script before the closing tag boby, as recommended