<marquee> only fires start event when it's displayed #2957
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interop
Implementations are not interoperable with each other
removal/deprecation
Removing or deprecating a feature
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If they do not implement marquee events, maybe we should just remove them instead? |
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Since it's marked as obsolete, should we really be changing anything about its specification? |
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@Yay295 browsers are still required to support it (due to content using it) so therefore the specification needs to be accurate. |
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I have no objection to getting rid of these, assuming Gecko is willing to drop support. I filed a bug to add use counters: https://bugzilla.mozilla.org/show_bug.cgi?id=1392710 There's a Chromium bug to support marquee events that's closed as wontfix: https://bugs.chromium.org/p/chromium/issues/detail?id=522326 |
ayg
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Aug 22, 2017
Incorporates whatwg/html#2957 (assuming we take Edge's behavior).
ayg
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Incorporates whatwg/html#2957 (assuming we take Edge's behavior).
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I submitted a patch on the Mozilla bug to add use counters, although I won't be able to follow up on it unless I find someone to continue to employ me to work on web standards. |
annevk
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domenic
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Jan 29, 2021
They were only supported by one engine (Gecko). Closes #2957.
domenic
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They are only supported by one engine (Gecko). Closes #2957.
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* Editorial: remove redundant "the" * Meta: default branch rename Also correct a broken link. Not even w3.org URLs are that cool. Helps with whatwg/meta#174. * Editorial: clean up calls to "parse a URL" It actually takes a string, so calls should be clear about that. * Review Draft Publication: January 2021 * Simplify <link>s In particular, remove their activation behavior, stop them from matching :link and :visited, and stop suggesting that they be focusable areas. This also includes a slight expansion and rearrangement of the link element's section to make it clearer what hyperlinks created by <link> are meant for, contrasting them to <a> and <area> hyperlinks. Closes whatwg#4831. Closes whatwg#2617. Helps with whatwg#5490. * Meta: remove demos/offline/* (whatwg#6307) These are no longer needed as of e4330d5. * Meta: minor references cleanup Use more HTTPS and drop obsolete HTML Differences reference. * Editorial: anticlockwise → counterclockwise We use en-US these days. Spotted in https://twitter.com/iso2022jp/status/1352601086519955456. * Use :focus-visible in the UA stylesheet See w3c/csswg-drafts#4278. * Editorial: align with WebIDL and Infra * Fix "update a style block" early return The new version matches implementation reality and CSSWG resolution. The algorithm was also inconsistent, as it looked at whether the element was in a shadow tree or in the document tree, but it was only specified to be re-run if the element becomes connected or disconnected. The CSSWG discussed this in w3c/csswg-drafts#3096 (comment) and http://wpt.live/shadow-dom/ShadowRoot-interface.html tests this. This also matches closer the definition of <link rel="stylesheet">, which does use connectedness (though it uses "browsing-context connected", which is a bit different): https://html.spec.whatwg.org/#link-type-stylesheet * Modernize and refactor simple dialogs This contains a small bug fix, in that confirm() and prompt() said "return" in some cases instead of "return false" or "return null" as appropriate. Other notable changes, all editorial, are: * Factoring out repeated "cannot show simple dialogs" steps, which will likely expand over time (see e.g. whatwg#6297). * Separating out and explaining the no-argument overload of alert(). * Passing the document through to the "printing steps", instead of just having them talk about "this Window object". * Meta: add definition markup for MessageEvent * Remove <marquee> events They are only supported by one engine (Gecko). Closes whatwg#2957. * Clarify when microtasks happen * Ignore COEP on non-secure contexts Fixes whatwg#6328. * Editorial: update URL Standard integration * Editorial: only invoke response's location URL once Complements whatwg/fetch#1149. * Track the incumbent settings and active script in Promise callbacks Closes whatwg#5213. * createImageBitmap(): stop clipping sourceRect to source's dimensions It has been found in whatwg#6306 that this was an oversight at the time of its introduction. Current behavior goes against author expectations and no implementer has opposed the change to "no-clip". Tests: web-platform-tests/wpt#27040. Closes whatwg#6306. * Remove CSP plugin-types blocking With Flash not being supported anymore, the CSP directive plugin-types has lost its main reason for being and is being removed from the Content Security Policy specification: w3c/webappsec-csp#456. 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Context: whatwg/xhr#311. * Fix typo: ancestor → accessor Fixes whatwg#6374. Co-authored-by: Dominic Farolino <[email protected]> Co-authored-by: Anne van Kesteren <[email protected]> Co-authored-by: Domenic Denicola <[email protected]> Co-authored-by: Emilio Cobos Álvarez <[email protected]> Co-authored-by: Momdo Nakamura <[email protected]> Co-authored-by: Jake Archibald <[email protected]> Co-authored-by: Yutaka Hirano <[email protected]> Co-authored-by: Shu-yu Guo <[email protected]> Co-authored-by: Kaiido <[email protected]> Co-authored-by: Antonio Sartori <[email protected]> Co-authored-by: Michael[tm] Smith <[email protected]> Co-authored-by: Ikko Ashimine <[email protected]> Co-authored-by: Carlos IL <[email protected]> Co-authored-by: Kagami Sascha Rosylight <[email protected]> Co-authored-by: Simon Pieters <[email protected]>
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This doesn't match browser behavior (I intend to post tests today). Neither Edge nor Firefox fire the event until the element is added to a document. Edge also doesn't fire it for a marquee that's display: none, although Firefox does. I would say the spec should follow Edge, all else being equal, because they made up the feature.
(Chrome and WebKit do not implement marquee events AFAICT.)
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