* 仕様書

[REFS[
- [3] [CITE@en-US-x-hixie[HTML Standard]] ([TIME[2012-06-08 22:09:53 +09:00]] 版) <http://www.whatwg.org/specs/web-apps/current-work/#dom-document-csselementmap>
- [4] [CITE@en-US-x-hixie[HTML Standard]] ([TIME[2012-06-08 22:09:53 +09:00]] 版) <http://www.whatwg.org/specs/web-apps/current-work/#css-element-reference-identifier>
]REFS]

* 歴史

[REFS[
- [1] [CITE@en[Web Applications 1.0 r5695      Define how we create a 'specified CSS element reference identifier'. This maybe should move from HTML to CSSOM.]]
( ([TIME[2010-12-02 09:09:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=5694&to=5695>
- [6] [CITE@en-US[csswg: changeset 2219:d4c7d73ae7f7]] ([TIME[2012-06-12 14:05:23 +09:00]] 版) <http://dvcs.w3.org/hg/csswg/rev/d4c7d73ae7f7>
- [5] [CITE@en-US[csswg: changeset 2220:a1bc4b1287b1]] ([TIME[2012-06-12 14:04:51 +09:00]] 版) <http://dvcs.w3.org/hg/csswg/rev/a1bc4b1287b1>
- [9] [CITE@en-US[csswg: changeset 5153:8a651e76cd87]] ([TIME[2012-06-12 14:13:24 +09:00]] 版) <http://dvcs.w3.org/hg/csswg/rev/8a651e76cd87>
- [8] [CITE@en-US[csswg: changeset 5178:f057bc3959f9]] ([TIME[2012-06-12 14:12:38 +09:00]] 版) <http://dvcs.w3.org/hg/csswg/rev/f057bc3959f9>
- [2] [CITE[IRC logs: freenode / #whatwg / 20101202]]
( ([TIME[2010-12-31 14:34:30 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20101202>
- [7] [CITE@en-US[csswg: changeset 5153:8a651e76cd87]] ([TIME[2012-06-12 14:06:16 +09:00]] 版) <http://dvcs.w3.org/hg/csswg/rev/8a651e76cd87>
]REFS]

[10] >>9 で [CODE(CSS)@en[[[element()]]]] を使った [CODE(DOMi)@en[[[cssElementMap]]]] 
への参照は将来追加するかもという注記の元削除されています。

[11] [CITE[IRC logs: freenode / #whatwg / 20121129]]
( ([TIME[2012-12-09 19:48:18 +09:00]] 版))
<http://krijnhoetmer.nl/irc-logs/whatwg/20121129#l-93>

[12] [CITE@en[714507 – ''''''[''''''CSS3'''''']'''''' content:element() in any element or HTML5 Canvas in IMG element]]
([TIME[2015-10-17 11:17:31 +09:00]] 版)
<https://bugzilla.mozilla.org/show_bug.cgi?id=714507>

[13] [CITE@en[Remove unimplemented document.cssElementMap · whatwg/html@797b4d2]]
([TIME[2015-10-18 23:25:09 +09:00]] 版)
<https://github.com/whatwg/html/commit/797b4d273955a0fe3cc2e2d0ca5d578f37c0f126>

[14] [CITE@en['''['''css-images-3''']''' Remove leftover reference to the element() function]] ([[frivoal]]著, [TIME[2017-02-27 16:14:20 +09:00]]) <https://github.com/w3c/csswg-drafts/commit/7b6dc4f8ed19a08c5021b858d0bf58c0c2283be4>