How to identify the origin JavaScript was loaded from, including redirects

Question

Is it possible to get the origin that a script tag was loaded from?

Note, I don't want the src of the script tag as that doesn't include redirection.

I have found post like JavaScript - How do I get the URL of script being called? but this are all based off identifying the script src rather than the origin the script was eventually loaded from

What do you mean with "origin"? the third server in the second rack in the datacenter in city xy? — Jonas Wilms, Jul 23 '19 at 10:45
@Piyush — I'm pretty sure the OP means "programmatically, with client-side JS" — Quentin, Jul 23 '19 at 10:45
@JonasWilms — It's a standard term: https://developer.mozilla.org/en-US/docs/Glossary/Origin — Quentin, Jul 23 '19 at 10:46
@quentin but then the question is ... why? What usecase is the OP trying to solve? — Jonas Wilms, Jul 23 '19 at 10:47

score 0 · Answer 1 · answered Jul 23 '19 at 10:45

0

No, it isn't possible.

The src is the only API provided. You can't even make a new HTTP request to it and find out that way since XMLHttpRequest and fetch follow redirects transparently.

answered Jul 23 '19 at 10:45

Quentin

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How to identify the origin JavaScript was loaded from, including redirects

1 Answers1