I am writing code for a site, I want to do something like this: there is a share button and a line (which will be filled), when you click on the button, you are transferred to whatsapp where you have to send a certain message (this has already been done), after that the line is filled for a certain part, and after filling in the line, you have a button, when you click on it, you are given a code (this is not done) (random number).
Please tell me the code how to do it.