Click on a link to open two pages

Hi,
I don't know if this topic has been covered before, but since I don't know what to look for, I'll ask again.

Some of my competitors have built in a function where if you click on an internal link on a website, an internal and an external link opens at the same time in new tab.
I would be interested to know how this is done?

I don't know yet whether I'll use it myself. On the one hand, it's nice to make your offers extremely visible. On the other hand, I find it quite annoying at times ...
What are your experiences with it?

Thank you for your help!

You can easily achieve that by JS,
The function will depend wherever you need to apply that to all of the links with the same internal and external links or specific links for each link,
Use GPT or bing chat and you'll come up with something in a couple of minutes

Not user friendly but possible here is a link to an example:

This is oldest trick in the book.

There's several ways to do it, here's 2 using JS

First is onclick. You open a 2nd window with a url. Blocked by most browsers

Second is on landing page, person clicks through, then landing page has onload which opens the other page. Also blocked by most browsers

The smarter way to do is via redirect instead of opening windows. Page 1 -> Page 2 -> Page 3. This isn't blocked, and you just gotta time it right for good effects.

Hope this helps

Or you can do it with htaccess file

Many thanks for your answers! I will perhaps try it out on one site for test purposes. It annoys me too, but it seems to be quite normal nowadays, especially in the adult sector ...

You can do with htaccess i think