How to customize facebook share button?

Question

JavaScript

Question from the "do it for me" series))
I can't figure out how to link to the sharing button on FB, substituting the following parameters in JS:

• Title
  
• Description
  
• IMG Url
  

There is no way to write in OG. The link to the button is called after a successfully completed Ajax.
In general, nid help how to correctly form a request for sharing in FB