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Re: table cells, th-mapping

for

From: Miriam Fukushima
Date: Mar 17, 2021 9:30AM

Thank you everyone for the input. I think i go then with the
abbr-attribute solution.

Kind regards, Miriam

On 16/03/2021 17:02, Jonathan Avila wrote:
> Glenn, I think it's say a td could point to another to the id of td or th that then points to another th - sort of chaining of headers without directly referencing them.
>
> Jon
>
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> Subject: Re: [WebAIM] table cells, th-mapping
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>
> Ah, yes, thanks Jonathan.
>
> But there's also the difficult to understand section of the headers spec (
> https://www.w3.org/TR/html53/tabular-data.html#element-attrdef-tablecells-headers)
> that says
>
> A th <https://www.w3.org/TR/html53/tabular-data.html#elementdef-th> element A is said to be *targeted* by a th or td <https://www.w3.org/TR/html53/tabular-data.html#elementdef-td> element B if either A is *directly targeted* by B or if there exists an element C that is itself *targeted* by the element B and A is *directly targeted* by C.
>
> I had to read that a dozen times to get it. A td directly targeting a th via the headers attribute is valid but a td can also target a separate element (C) if C directly targets the th. I'm not sure how to code that because even if I could have the td point to the span via headers, I could not point the span itself to the th via headers because headers is not a valid attribute for a span.
>
>
>
> On Tue, Mar 16, 2021 at 9:40 AM Jonathan Avila < <EMAIL REMOVED> >
> wrote:
>
>> It's my understanding that the spec says the ids must point to TH
>> cells themselves and not something else like a span inside of them.
>>
>> https://html.spec.whatwg.org/multipage/tables.html#attr-tdth-headers
>>
>> Jonathan
>>
>>
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