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[1] [[HTML]] の [DFN[[CODE(HTMLe)[td]] 要素型]]は、
[[表]]のデータ[RUBYB[[[こま]]] [cell]]をあらわします。

[4]
仕様書:
- [[HTML 4]]
-- [CSECTION[11.2.6 Table cells: The [CODE(HTMLe)[TH]] and [CODE(HTMLe)[TD]] elements]]
<IW:HTML4:"struct/tables.html#edef-TD">

[2]
:[[局所名]]:[CODE(HTMLe)[td]]
:[[名前空間名]]:[CODE(URI)[[[http://www.w3.org/1999/xhtml]]]]
:[[開始タグ]]:必須
:[[終了タグ]]:省略可能 (HTML 4), 必須 (XHTML 1)
:[[内容模型]]:[CODE[%[[flow]]*]]
:出現できる文脈:[CODE(HTMLe)[[[tr]]]] 直下
:[[属性]]:
,属性名	,属性値の型	,既定値	,説明	,状態	,出典
,[CODE(HTMLa)[[[abbr]]]]	,[CODE[%[[Text]]]]	,(なし)	,省略形	,[HTML 4]
,[CODE(HTMLa)[[[align]]]]	,	,	,揃え	,[HTML 4] [CODE(SGML)[%[[cellhalign]]]]
,[CODE(HTMLa)[[[axis]]]]	,[CODE(ABNF)[#[CODE(SGML)[[[IDREF]]]]]]	,(なし)	,関連する見出し	,[HTML 4]
,[CODE(HTMLa)[[[background]]]]	,[CODE(SGML)[%[[URI]]]]	,	,背景画像	,非標準
,[CODE(HTMLa)[[[bgcolor]]]]	,	,	,背景色	,[HTML 4] 非推奨
,[CODE(HTMLa)[[[bordercolor]]]]	,[CODE(SGML)[%[[Color]]]]	,	,境界色	,非標準
,[CODE(HTMLa)[[[bordercolordark]]]]	,[CODE(SGML)[%[[Color]]]]	,	,境界色 (明色)	,非標準
,[CODE(HTMLa)[[[bordercolorlight]]]]	,[CODE(SGML)[%[[Color]]]]	,	,境界色 (暗色)	,非標準
,[CODE(HTMLa)[[[char]]]]	,	,	,揃える文字	,[HTML 4] [CODE(SGML)[%cellhalign]]
,[CODE(HTMLa)[[[charoff]]]]	,	,	,揃える文字	,[HTML 4] [CODE(SGML)[%cellhalign]]
,[CODE(HTMLa)[[[class]]]]	,	,	,[[級]]	,[HTML 4] %[[coreattr]]
,[CODE(HTMLa)[[[colspan]]]]	,[CODE(SGML)[[[NUMBER]]]]	,[CODE(HTML)[1]]	,列またぎ	,[HTML 4]
,[CODE(HTMLa)@en[[[content]]]]
,[CODE(HTMLa)[[[dir]]]]	,	,	,[[書字方向]]	,[HTML 4] %[[i18n]]
,[CODE(HTMLa)[[[headers]]]]	,[CODE(SGML)[[[IDREFS]]]]	,(なし)	,見出しこま	,[HTML 4]
,[CODE(HTMLa)[[[height]]]]	,	,	,高さ	,[HTML 4] 非推奨
,[CODE(HTMLa)@en[[[csheight]]]]	,	,	,	,非標準
,[CODE(HTMLa)[[[id]]]]	,	,	,一意識別子	,[HTML 4] %coreattr
,[CODE(HTMLa)@en[[[istarget]]]]	,	,	,	,非標準	,[[Windows Live Spaces]]
,[CODE(HTMLa)[[[lang]]]]	,	,	,[[自然言語]]	,[HTML 4] %i18n
,[CODE(HTMLa)[[[xml]]:lang]]	,	,	,自然言語	,[XHTML1]
,[CODE(HTMLa)[[[nowrap]]]]	,([[真偽値属性]])	,(偽)	,折返しなし	,[HTML 4] 非推奨
,[CODE(HTMLa)[[[onclick]]]]	,	,	,	,[HTML 4] %[[events]]
,[CODE(HTMLa)[[[ondblclick]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onkeydown]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onkeypress]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onkeyup]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onmousedown]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onmousemove]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onmouseout]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onmouseover]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)[[[onmouseup]]]]	,	,	,	,[HTML 4] %events
,[CODE(HTMLa)@en[[[orientationpreference]]]]	,	,	,	,非標準	,[[Windows Live Spaces]]
,[CODE(HTMLa)[[[rowspan]]]]	,[CODE(SGML)[[[NUMBER]]]]	,[CODE(HTML)[1]]	,行またぎ	,[HTML 4]
,[CODE(HTMLa)[[[scope]]]]	,[CODE[%Scope]]	,(なし)	,見出し適用範囲	,[HTML 4]
,[CODE(HTMLa)[[[style]]]]	,	,	,スタイル情報	,[HTML 4] %coreattr
,[CODE(HTMLa)[[[title]]]]	,	,	,注釈的題	,[HTML 4] %coreattr
,[CODE(HTMLa)[[[valign]]]]	,	,	,垂直配置	,[HTML 4] [CODE(SGML)[%[[cellvalign]]]]
,[CODE(HTMLa)[[[width]]]]	,	,	,幅	,[HTML 4] 非推奨
,[CODE(XMLa)[[[xmlns]]]]	,[CODE(URI)[[[http://www.w3.org/1999/xhtml]]]] 固定	,==	,[[名前空間名]]	,W3C 勧告	,[[XHTML m12n]]
,[CODE(HTMLa)@en[[[xpos]]]]	,[CODE(SGML)@en[[[NUMBER]]]]	,	,	,非標準

* 状態

[8] [CODE(DOMi)@en[HTMLElement]] の状態に加えて、
[FIG(list members)[
: [F[[CODE(DOMa)@en[headers]]]] : [CODE(DOMi)@en[DOMTokenList]]
]FIG]

* 歴史

[5]
[[HTML 4]] の [[DTD]] の[[注釈宣言]] ([[参考]]) には
>
TH is for headers, TD for data, but for cells acting as both use TD

と書かれています。

* 例

[3]
[PRE(HTML)[
<TABLE summary="This table charts the number of cups
                   of coffee consumed by each senator, the type 
                   of coffee (decaf or regular), and whether 
                   taken with sugar.">
<CAPTION>Cups of coffee consumed by each senator</CAPTION>
<TR>
   <TH>Name</TH>
   <TH>Cups</TH>
   <TH>Type of Coffee</TH>
   <TH>Sugar?</TH>
<TR>
   <TD>T. Sexton</TD>
   <TD>10</TD>
   <TD>Espresso</TD>
   <TD>No</TD>
<TR>
   <TD>J. Dinnen</TD>
   <TD>5</TD>
   <TD>Decaf</TD>
   <TD>Yes</TD>
</TABLE>
]PRE]

(HTML 4 仕様書より)

レンダリング例:
[PRE[
    Cups of coffee consumed by each senator
   Name         Cups    Type of Coffee   Sugar?
T. Sexton    10         Espresso         No
J. Dinnen    5          Decaf            Yes
]PRE]

[[#comment]]

** メモ

[[#comment]]

* メモ

[6] [CITE@en[(X)HTML5 Tracking]]
([TIME[2009-08-30 16:48:25 +09:00]] 版)
<http://html5.org/tools/web-apps-tracker?from=3517&to=3518>

[7] [CITE@en[Merge the two table cell interfaces together · whatwg/html@e383ae2]]
([TIME[2016-04-27 17:04:39 +09:00]] 版)
<https://github.com/whatwg/html/commit/e383ae23776362cafb2fb4bbba70c8c9080d4b0f>

[9] [CITE@en[Editorial: Cross-reference DOM "child" where appropriate in rendering]]
([[zcorpan]]著, [TIME[2016-09-20 20:16:41 +09:00]])
<https://github.com/whatwg/html/commit/e8c91c05edc8d6cdb33fdd5452e052359d40490b>

[FIG(quote)[
[FIGCAPTION[
[10] [CITE@en[Minutes '''['''was: Agenda for 971023 HTML WG meeting''']''']]
([[Dan Connolly]]著, [TIME[1997-10-24 03:37:08 +09:00]])
<https://lists.w3.org/Archives/Public/w3c-wai-hc/1997OctDec/0160.html>
]FIGCAPTION]

> 
> RESOLVED: <li> and <td>, INS DEL have to be %flow;
> 	(i.e. (%inline;|%block)*)

]FIG]

[11] [CITE@en[Specifiy name and description rules for td, th and tr elements - issue …]]
([[asurkov]]著, [TIME[2018-05-28 23:30:45 +09:00]])
<https://github.com/w3c/html-aam/commit/7ef3eb19602be3179b39b728494639788c9f4f36>

[12] [CITE@en[Specifiy name and description rules for td, th and tr elements - issu… by asurkov · Pull Request #132 · w3c/html-aam]]
([TIME[2018-06-01 01:04:50 +09:00]])
<https://github.com/w3c/html-aam/pull/132>

[13] [CITE@en[HTML-AAM: td and tr Name and Description Computation not specified · Issue #44 · w3c/html-aam]]
([TIME[2018-06-01 01:05:18 +09:00]])
<https://github.com/w3c/html-aam/issues/44>

[14] [CITE@en[Change <td hidden> to render as display: none]]
([[zcorpan]]著, [TIME[2018-06-05 16:21:10 +09:00]])
<https://github.com/whatwg/html/commit/b3c7c89e198bcebefab7c57777e9564ecd83f7e4>

[15] [CITE@en[Specifiy name and description rules for td, th and tr elements - issue …]]
([[asurkov]]著, [TIME[2018-05-28 23:30:45 +09:00]])
<https://github.com/w3c/html-aam/commit/7ef3eb19602be3179b39b728494639788c9f4f36>

[16] [CITE@en[Specifiy name and description rules for td, th and tr elements - issu… by asurkov · Pull Request #132 · w3c/html-aam]]
([TIME[2019-02-23 18:08:21 +09:00]])
<https://github.com/w3c/html-aam/pull/132>

[17] [CITE@en[HTML-AAM: td and tr Name and Description Computation not specified · Issue #44 · w3c/html-aam]]
([TIME[2019-02-23 18:08:40 +09:00]])
<https://github.com/w3c/html-aam/issues/44>

[18] [CITE@en[HTML-AAM: td and tr Name and Description Computation not specified · Issue #352 · w3c/aria]]
([TIME[2019-02-23 18:09:05 +09:00]])
<https://github.com/w3c/aria/issues/352>

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