How to make a modular wordpress registration form without plugins?

Question

WordPress

Tried to implement a modular registration form similar to -

spoiler

https://studio-gost.ru/vsplyvayushhaya-forma-vxoda...

But the attempts were in vain and the module either did not work at all, or the page was updated immediately.
I would like to know how, like this -

spoiler

https://www.howtomake.com.ua/wordpress/ajax-avtori...

make modular ajax signup form in wordpress

Answer 1

Hello!
You didn't even specify what exactly doesn't work, what kind of error occurs, etc.

How to make a modular wordpress registration form without plugins?

Divide the task into several stages:
1) a modal window (implement a button that, when clicked, displays, )
If the theme is on bootstrap, then here: https://getbootstrap.com/docs/4.0/components/modal/
If the theme is not on bootstrap , then you can take any jquery modal.
For example, https://stephanwagner.me/jBox
2) Next, implement the display of the registration form inside the modal and processing the form after submission.
Here, for example -
https://gist.github.com/vishalbasnet23/1937b45be0e...
You can also look for implementations, but this example is enough for me.