Noscript is another addon, it blocks Javascript completely. You probably won't be able to log in, but it's worth a shot.

I just looked at the Elsevier page, it looks like what I expected. I'm sure there's a way to get the docs, I just don't have much access right now to search for it. My last recommendation is to try and find the book on a torrent site. My second last recommendation is to ask at !piracy@lemmy.dbzer0.com (I don't know if that link will work) if someone knows about Elsevier, they're pretty helpful, and you're just trying to read a book you already have access to.

Good luck.

https://noscript.net/

Some websites will fall back to a "simple" version when the javascript they prefer isn't allowed. it's good design. My guess is that these parasites will design their website without such accessibility principals and prevent you from using it except on their terms. But it's worth a shot.