On 4/13/22 12:48 PM, Mason Freed wrote:
Contact emails
mas...@chromium.org
Explainer
https://github.com/whatwg/html/pull/7816
https://github.com/whatwg/html/issues/6003
Specification
https://github.com/whatwg/html/pull/7816
Summary
The <param> element can be used to specify parameters such as a URL
(via params named "movie", "src", "code", "data", or "url") to a
containing <object> element. Given the removal of plugins from the web
platform, and the relative lack of use of this particular
functionality, we would like to deprecate and remove it.
Blink component
Blink <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink>
Motivation
Given that plugins are gone from the web platform (with their full
removal from the spec being tracked in
https://github.com/whatwg/html/issues/6003), it is not useful. In some
browsers it can be used to figure out the URL of an <object>, even
when that <object> is not being used for a plugin, via params named
"movie", "src", "code", "data", or "url". But we decided to remove
this behavior from browsers instead of specifying it. This retains the
HTMLParamElement interface, as well as the parser behavior of <param>.
Initial public proposal
Search tags
<param> <https://chromestatus.com/features#tags:%3Cparam%3E>, <object>
<https://chromestatus.com/features#tags:%3Cobject%3E>
TAG review
TAG review status
Not applicable
Risks
Interoperability and Compatibility
Gecko: Shipped/Shipping
(https://github.com/whatwg/html/issues/387#issuecomment-1088331300)
Issue was initially raised by Mozilla, and Gecko already does not
process param at all.
WebKit: No signal (https://bugs.webkit.org/show_bug.cgi?id=239188) No
response on the bug yet.
Web developers: No signals
Other signals:
Ergonomics
Since this is a deprecation, there is a Web Compat risk. I added use
counters for the situations that will be affected: - <param> that
specifies a URL, inside an <object> that doesn't: 0.04%,
https://chromestatus.com/metrics/feature/timeline/popularity/4010 - As
above, but URL successfully resolves to a (supported) PDF resource:
0.00002%,
https://chromestatus.com/metrics/feature/timeline/popularity/4110 - As
above, but URL successfully resolves to an (unsupported) non-PDF
resource: not measurable,
https://chromestatus.com/metrics/feature/timeline/popularity/4111 So
the vast majority (99.95%) of <param> URL usage appears to point to
invalid resources - likely mostly Flash. A very small percentage
(0.05% of <param>-with-URL usage, 0.00002% of web page loads) are
likely to break when we deprecate this functionality.
I clicked on the first 20 results from
https://chromestatus.com/metrics/feature/timeline/popularity/4010
(careful, 1 is NSFW), and 18 contain busted SWFs. But two of them are
embedding youtube videos via <param>:
https://jackrussell.forumattivo.com/ has an <object> that has a child
param name="movie"
value="https://www.youtube.com/v/_ikcScPyKUQ&hl=it&fs=1&";>.
http://sextherapy.ru/ (SFW-ish, at least on the homepage)<param
name="src"
value="//www.youtube.com/v/7wQYLXBX2RQ?version=3&hl=ru_RU&rel=0" />
I had no idea that was possible - can we dig in some more to see how
many params have a value with "youtube.com", to see if I got lucky and
found the only 2, or if a lot of sites are relying on this behavior?
WebView Application Risks
Does this intent deprecate or change behavior of existing APIs, such
that it has potentially high risk for Android WebView-based applications?
Debuggability
Deprecation.
Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md>?
Yes
Flag name
Requires code in //chrome?
False
Tracking bug
https://crbug.com/1315717
Estimated milestones
No milestones specified
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/6283184588193792
This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.
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