The table is "Supported common attributes" so are these supported on any browser on the input element, and are they common to many types of input elements? If not, then they wouldn't appear here.

More generally, if you look at the browser compatibility they aren't listed: htps://developer.mozilla.org/en-US/docs/Web/HTML/Element/input#browser_compatibility - this is a strong indication that they aren't supported on any of our tracked browsers.

If you think they are, then can you please provide a test case that demonstrate said support, and we would move this to browser compatibility data repo to proceed.

@hamishwillee
Available on most of my chromium browser currently

To test, input this in your browser inspector console:

let input = document.createElement("input");
input.type = "month";
input.id = "test";
document.body.appendChild(input);

let test = document.getElementById("test").valueAsDate;

console.log(test); // or just `test` in the browser console

It outputs null (default valueAsDate value) !== undefined

BCD team - the two HTML input values valueAsDate and valueAsNumber are not in BCD. As per above, they may be supported in some browsers. If so, we can document them once BCD confirms this and is updated.

Actually, this is a case of looking at the wrong page/table. The IDL values are tracked on the API page, not the HTML element page. If you look at the HTMLInputElement API page, you'll see both valueAsDate and valueAsNumber there.

@queengooborg yes, but not on the specific <input type="month"> page

You're looking on the wrong page. You want to look at https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement#browser_compatibility instead, which describes the interface and its features. We don't document IDL attributes in the HTML data; we only document HTML attributes there.

@queengooborg

You're looking on the wrong page. You want to look at developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement#browser_compatibility instead, which describes the interface and its features. We don't document IDL attributes in the HTML data; we only document HTML attributes there.

Why are there present in every other input elements, then?
Exemple: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/date#technical_summary

Oh, wait- you're not talking about the browser compatibility section... Hold on, let me transfer this issue back to the content repo.

@hamishwillee This was not a BCD issue. The reporter is referring to the " row within the Technical Summary section of the page:

BCD would not list these under the HTML element data because they are API attributes, not HTML element attributes, so they would not appear in the browser compatibility tables on these pages.

Indeed, sorry for not clarifying earlier, I had no idea of what "BCD" meant

Curses. Thanks all - I was confused by this. @Malix-off - would you like to add those attributes?

Curses. Thanks all - I was confused by this. @Malix-off - would you like to add those attributes?

Np!
Yep, if you allow PRs.
I'm busy bc of exams, but will eventually open the PR for review before Thursday afternoon UTC

@hamishwillee see #31639