TAMURA, Kent

lookupNamespaceURI('xml')

3

Specification: https://dom.spec.whatwg.org/#locate-a-namespace https://dom.spec.whatwg.org/#dom-xpathnsresolver-lookupnamespaceuri https://www.w3.org/TR/DOM-Level-3-XPath/xpath.html#XPathEvaluator-createNSResolver Chrome, EdgeHTML, and Safari follow the current definition of `Node.lookupNamespaceURI()` and `XPathEvaluator.createNSResolver()`. That is to say, `Node.lookupNamespacURI()` has no special handling for 'xml' prefix, and an...

FormData: Add ability to specify submitter in addition to <form>

1

Context: https://github.com/whatwg/html/issues/3195 Context: https://github.com/whatwg/xhr/issues/202 FormData should have ability to add an entry for a submitter button when it appends entries for a &lt;form>. We have multiple options of how to...

Discuss how to enable platform-dependent appearance

1

`````` will have a platform-independent appearance by default. We should provide an easy way to enable platform-dependent appearance.

`field-sizing` CSS property

2

### Proposal Add a document for `field-sizing` CSS property. https://drafts.csswg.org/css-ui/#field-sizing https://github.com/whatwg/html/pull/9903 ### Task list - [ ] ### Additional information _No response_ ### Are you willing to support this work?...

ElementInternals should work with customized built-in elements

7

Spec: https://html.spec.whatwg.org/C/#dom-attachinternals Now `ElementInternals` doesn't work with customized built-in elements because of the first step of `attachInternals()`. > 1. If element's is value is not null, then throw a "NotSupportedError"...

For example, [DOMNodeRemovedFromDocumentEvent](https://www.chromestatus.com/metrics/feature/timeline/popularity/146) currently shows **11.66%** However, if I compute the following with numbers from uma.googleplex.com Blink.UseCounter.Features metric: DOMNodeRemovedFromDocumentEvent * 100 / PageVisits it's **0.054%**. DOMNodeRemovedFromDocumentEvent is WebKit/Blink-only feature. So...

### WebKittens _No response_ ### Title of the proposal css-text: text-justify property ### URL to the spec https://www.w3.org/TR/css-text-3/#text-justify-property ### URL to the spec's repository _No response_ ### Issue Tracker URL...