Note in Origin doc how no-cors mode affects GET/HEAD vs POST

[hmolsen]

What was wrong/why is this fix needed? (quick summary only)
The Origin header is however added for cross-origin POST requests, even if they are simple POST requests. This becomes clear in Point 3. of the Origin header algorithm in https://fetch.spec.whatwg.org/#append-a-request-origin-header
I have verified this behaviour in both Chrome and Firefox latest.

MDN URL of main page changed
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Origin

Issue number (if there is an associated issue)

Anything else that could help us review it

[github-actions]

Preview URLs

• https://pr4853.content.dev.mdn.mozit.cloud/en-US/docs/Web/HTTP/Headers/Origin

Flaws

None! 🎉

External URLs

URL: /en-US/docs/Web/HTTP/Headers/Origin
Title: Origin
on GitHub

No new external URLs

[wbamberg]

@sideshowbarker , is there any reason not to merge this one?

[sideshowbarker]

@sideshowbarker , is there any reason not to merge this one?

I guess I’d had in mind to wait on follow-comments from @hamishwillee. But I can guess can go ahead and merge this, and if there’s any further refinement needed, it can be done through a follow-up PR.

[sideshowbarker]

@hmolsen Thanks much for catching this and fixing it, and congrats on landing your first docs change here — welcome aboard 🎉

[hamishwillee]

is there any reason not to merge this one?

I guess I’d had in mind to wait on follow-comments from @hamishwillee. But I can guess can go ahead and merge this, and if there’s any further refinement needed, it can be done through a follow-up PR.

@sideshowbarker FYI I really appreciate the consideration, but if you're happy with a PR I am very happy for you to merge and to come back later for follow up. FYI I work on MDN Monday, Tuesday, Friday, and only fly-by on the other days.