1856533 - vollowx.github.io - HTMLElement.attachInternals().states isn't supported

Status: RESOLVED DUPLICATE of bug 1588763

(Core :: DOM: Core & HTML, defect)

Description

[Raul Bucata]

From github: https://github.com/webcompat/web-bugs/issues/127947.

<!-- @browser: Firefox 120.0 -->
<!-- @ua_header: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/120.0 -->
<!-- @reported_with: unknown -->
<!-- @public_url: https://github.com/webcompat/web-bugs/issues/127947 -->

URL: https://vollowx.github.io/mixed-components/

Browser / Version: Firefox 120.0
Operating System: Windows 10
Tested Another Browser: Yes Chrome

Problem type: Something else
Description: HTMLElement.attachInternals().states isn't supported
Steps to Reproduce:
I'm currently using HTMLElement.attachInternals().states.add/delete to set states for CSS, Chromium-based browsers has already supported this feature but Firefox doesn't
<details>
<summary>View the screenshot</summary>
<img alt="Screenshot" src="https://webcompat.com/uploads/2023/10/c96efba7-6aa6-4eb4-83da-35d63272fc72.jpg">
</details>
<details>
<summary>View the screenshot</summary>
<img alt="Screenshot" src="https://webcompat.com/uploads/2023/10/1622db3f-d4ff-42d6-8e3c-10f1c90b644e.jpg">
</details>

<details>
<summary>Browser Configuration</summary>
<ul>
<li>None</li>
</ul>
</details>

From webcompat.com with ❤️

Change performed by the Move to Bugzilla add-on.

Comment 1

[Raul Bucata]

The issue was reported via the webcompat.com reporter. Since the issue is related to a pref of the browser, we have moved the issue. Please feel free to move the issue to the correct Product and Component.