Remove 'Reflecting ARIA attributes' from experimental FX relnotes; add ARIA reflection to FX119 relnotes

[zfox23]

Description

• Removes 'Reflecting ARIA attributes' from experimental Firefox release notes
• Adds ARIA Reflection to FX119 release notes under APIs -> DOM

Motivation

The browser is changing, and we must keep up!

Additional details

https://bugzilla.mozilla.org/show_bug.cgi?id=1785412

Related issues and pull requests

Child of #29311
Should be merged along with mdn/browser-compat-data#20911

[github-actions]

Preview URLs

• /en-US/docs/Mozilla/Firefox/Experimental_features
• /en-US/docs/Mozilla/Firefox/Releases/119

External URLs (81)

URL: /en-US/docs/Mozilla/Firefox/Releases/119
Title: Firefox 119 for developers

• https://bugzil.la/1785412 (1 time) (Note! This may be a new URL 👀)

---

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox

• https://bugzil.la/1057233 (1 time)
• https://bugzil.la/1099557 (1 time)
• https://bugzil.la/1178765 (1 time)
• https://bugzil.la/1190623 (1 time)
• https://bugzil.la/1223880 (1 time)
• https://bugzil.la/1245183 (2 times)
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• https://bugzil.la/934425 (1 time)
• https://docs.microsoft.com/en-us/typography/opentype/spec/ (1 time)
• https://drafts.csswg.org/css-inline/ (1 time)
• https://en.wikipedia.org/wiki/Graphics_Processing_Unit (1 time)
• https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/examine_and_edit_css/index.html (1 time)
• https://globalprivacycontrol.org/ (1 time)
• https://jpeg.org/jpegxl/ (1 time)
• https://support.mozilla.org/en-US/kb/about-config-editor-firefox (1 time)
• https://www.mozilla.org/en-US/firefox/channel/desktop/ (2 times)
• https://www.mozilla.org/en-US/firefox/developer/ (2 times)

(comment last updated: 2023-10-06 20:04:23)

[dipikabh]

Thanks, @zfox23. This looks good overall.
I've suggested a few edits and have a question about the example.

[dipikabh]

• Should we say "now supported by default" because it could be enabled earlier but after setting the preference?
• Looking at a previous release note to keep the styling consistent for referencing the Fx bug.
• The addition of a quick example is really good here! 👍. I am wondering if el should be <element>. Or perhaps, we should provide an actual example like button.ariaPressed = "true";?

Suggested change

- [ARIA](/en-US/docs/Web/Accessibility/ARIA) reflection is enabled for attributes that do not reference other elements; only non-IDREF attributes are reflected. This allows developers to get and set ARIA attributes on DOM elements directly via JavaScript APIs, rather than by using `setAttribute` and `getAttribute`. For example, `el.ariaPressed = "true";` is now supported in addition to `el.setAttribute("aria-pressed", "true");`. (See [Firefox bug 1785412](https://bugzil.la/1785412) for more details.)

- [ARIA](/en-US/docs/Web/Accessibility/ARIA) reflection is now supported by default for attributes that do not reference other elements; only non-IDREF attributes are reflected. You can now get and set ARIA attributes on DOM elements directly via JavaScript APIs, rather than by using `setAttribute` and `getAttribute`. For example, `el.ariaPressed = "true";` is now supported in addition to `el.setAttribute("aria-pressed", "true");` ([Firefox bug 1785412](https://bugzil.la/1785412)).

[zfox23]

• Should we say "now supported by default" because it could be enabled earlier but after setting the preference?

Yeah, I like that!

• Looking at a previous release note to keep the styling consistent for referencing the Fx bug.

Thanks :)

• The addition of a quick example is really good here! 👍. I am wondering if el should be <element>. Or perhaps, we should provide an actual example like button.ariaPressed = "true";?

Ooh, okay, I have changed it to buttonElement.ariaPressed = "true";, which I think is better and more clear. WDYT?

[dipikabh]

The updates look good, thank you! 👍