How to return the user after authorization back to the product page?

Question

JavaScript

Good afternoon Toaster!
The essence of the problem: the user (hereinafter referred to as "P") is on the product page (a certain substance that can be downloaded only after authorization), P clicks on "download" and a model window pops up that says that you need to download it, or log in, or register. P selects something from the above and gets to the corresponding page. Advise if it is possible from the Front End to return P back to the product?
Thank you.

Answer 1

From the Front End, you can simply not leave the product page.
If authorization or registration strictly requires a separate page, you can save the address of the current product page in any way (cookie, LocalStorage, SessionStorage, IndexedDB &c. &c.) and then change the current address to the remembered one using the script.

Answer 2

History API, location

Answer 3

Save in localStorage or sessionStorage a link to this product. After authorization / registration, check if there is a saved link, then redirect the user there, otherwise nothing.

Answer 4

Well, either as an option to drag the GET redirecturl parameter with you