1729239 - Implement HTMLScriptElement.supports(type) method

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, enhancement, P3)

Description

[horo]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.20 Safari/537.36

Steps to reproduce:

HTMLScriptElement.supports('classic')

Actual results:

Throws an error:
Uncaught TypeError: HTMLScriptElement.supports is not a function

Expected results:

Returns true.

HTMLScriptElement.supports(type) method was introduced by the recent spec change.
https://html.spec.whatwg.org/multipage/scripting.html#dom-script-supports
https://github.com/whatwg/html/pull/7008

Comment 1

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)(sickish, maybe slower respose)]

Anne, could you set the priority and severity?

Comment 2

[Tom S. (please needinfo tschuster)]

Tests should come in the next sync from https://github.com/web-platform-tests/wpt/commit/e02f4a5db0a268cb888edf0abbf90eff3cd98d3a.

Comment 3

[Tom S. (please needinfo tschuster)]

Attachment: Bug 1729239 - Implement HTMLScriptElement.supports(type) method. r?smaug

Comment 4

[Anne (:annevk)]

Thanks Tom for picking this up! \o/

Rationale for priority/severity: this isn't immediately important, but will become more important over time as 1) we implement other features, such as Import Maps, and 2) websites adopt it.

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/fed5c082061b
Implement HTMLScriptElement.supports(type) method. r=smaug

Comment 6

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/fed5c082061b

Comment 7

[Hamish Willee]

FYI MDN docs for this in the FF94 release can be tracked in https://github.com/mdn/content/issues/9365 - mostly this is just a page for the method, browser compatibility update, and a release note.

Feedback welcome on the initial docs, which have been created here: https://github.com/mdn/content/pull/9549
There isn't all that much to say about this yet since it won't become all that useful until you add support for some more script types.