Bug 248401 – ValidityState reports "valid" for partially completed dates

• Status: RESOLVED
• Resolution: FIXED
• Component: Forms

[Jeremy Frey]

Repro steps:

1. In an `<input type="date" />` element, use the keyboard to enter the month, day, or year portion of the date.
2. Leave the other date parts blank.
3. Inspect the element's ValidityState.

Expected:

`{ badInput: true, valid: false }`

Actual:

`{ badInput: false, valid: true }`

AFAIK, Blink and Gecko report badInput: true in this scenario.

A closely-related question was asked on SO which doesn't have any answers due to the current behavior: https://stackoverflow.com/questions/72915862/javascript-date-input-in-safari-validation-31-of-february-year

[Karl Dubost]

Probably related to http://wpt.live/html/semantics/forms/constraints/form-validation-checkValidity.html
https://wpt.fyi/results/html/semantics/forms/constraints/form-validation-checkValidity.html?label=experimental&label=master&aligned

[Radar WebKit Bug Importer]

<rdar://problem/102984901>

[Tim Nguyen (:ntim)]

Pull request: https://github.com/WebKit/WebKit/pull/13523

[EWS]

Committed 263748@main (ec9036933491): <https://commits.webkit.org/263748@main>

Reviewed commits have been landed. Closing PR #13523 and removing active labels.