How to save the data entered by the user in the input form on the site?

Question

Backend

There is a site. There is a button on the site, when I click on it, I want the user to enter his name and number and this data is sent to me and I call the person back.
How to do it? I am familiar with the frontend, but I have not studied the backend.
What needs to be done to save data?
What language do you recommend for writing the code? (is it possible to do this in python or JS since I'm familiar with them?)
How does it even work?

Answer 1

If you are familiar with the front, then most likely you know JS. So it will be easier for you to learn NodeJs.

1. You start the server.
   
2. Select a path on it.
   
3. Send data from the front to this address.
   
4. The handler receives information and writes it to the Database.
   

Learn more: Google the points.