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* 仕様書

[REFS[
- [68] [CITE@en-GB-x-hixie[HTML Standard]] ([TIME[2016-01-21 11:56:00 +09:00]] 版) <https://html.spec.whatwg.org/#concept-module-script-cors-setting>
- [14] [CITE@en-GB-x-hixie[HTML Standard]] ([TIME[2016-02-16 01:30:20 +09:00]] 版) <https://html.spec.whatwg.org/#the-script-element>
-- [16] [CITE@en-GB-x-hixie[HTML Standard]] ([TIME[2016-02-21 07:50:23 +09:00]] 版) <https://html.spec.whatwg.org/#attr-script-crossorigin>
-- [21] [CITE@en-GB-x-hixie[HTML Standard]] ([TIME[2016-02-21 07:50:23 +09:00]] 版) <https://html.spec.whatwg.org/#prepare-a-script>
- [24] [CITE@en[Fetch Standard]] ([TIME[2017-06-15 14:00:01 +09:00]]) <https://fetch.spec.whatwg.org/#concept-request-credentials-mode>
- [25] [CITE@en[Fetch Standard]] ([TIME[2017-06-15 14:00:01 +09:00]]) <https://fetch.spec.whatwg.org/#requestcredentials>
]REFS]

* 意味

[17] [CODE(HTMLe)@en[[[script]]]] [[要素]]の [CODE(HTMLa)@en[[[crossorigin]]]]
[[属性]]は、 [[CORS設定群属性]]です [SRC[>>16]]。

[18] [[古典スクリプト]]の場合には、 [CODE(HTMLa)@en[[[crossorigin]]]]
[[属性]]は、他の[[起源]]の[[スクリプト]]の場合に、
[[エラー]]情報を晒すかどうかを制御するものです。 [SRC[>>16]]

[19] [[モジュールスクリプト]]の場合には、 [CODE(HTMLa)@en[[[crossorigin]]]]
[[属性]は、異なる[[起源]]への[[要求]]における [[credentialsモード]]を制御するものです
[SRC[>>16]]。

* 文脈

[15] [CODE(HTMLe)@en[[[script]]]] [[要素]]の種別が[[データブロック]]の時は、
[CODE(HTMLa)@en[[[crossorigin]]]] [[属性]]を使っては[['''なりません''']] [SRC[>>14]]。

* 処理

[28] なお、 [CODE(HTMLe)@en[[[script]]]] [[要素]]では初回処理時の値が使われるので、動的に変更しても、意味を持ちません [SRC[>>16]]。

[22] [[スクリプトの準備]]では、次の通り[[CORS設定]]
([CODE(HTMLa)@en[[[crossorigin]]]] [[内容属性]]の[[状態]])
から定める [[credentialsモード]]が規定されています [SRC[>>21]]。
[FIG(table)[
:state: [[CORS設定]]
:mode: [[credentialsモード]]

:state: [[No CORS]]
:mode: [CODE[[[omit]]]]

:state: [[Anonymous]]
:mode: [CODE[[[same-origin]]]]

:state: [[Use Credentials]]
:mode: [CODE[[[include]]]]
]FIG]

* [CODE(DOMi)@en[HTMLScriptElement]] インターフェイス [CODE(DOMa)@en[crossOrigin]] 属性

[20] [CODE(DOMi)@en[[[HTMLScriptElement]]]] [[インターフェイス]]の
[DFN[[CODE(DOMa)@en[[[cross''O''rigin]]]]]] [[IDL属性]]は、
[CODE(HTMLa)@en[[[crossorigin]]]] [[内容属性]]を[[反映]]しなければ[['''なりません''']]
[SRC[>>14]]。これは[[文字列]]として[[反映]]するものです。

* credentials mode (スクリプト fetch オプション群)

[69] [[スクリプトfetchオプション群]]の[DFN[[F[credentials mode]]]]は、
[[スクリプトのfetch]] で使う [[credentials mode]] です [SRC[>>68]]。

* 歴史

[1] [CITE@en[Web Applications 1.0 r6926     Change crossorigin='' to act like No CORS mode for same-origin resources, at least until a cross-origin redirect comes along.]]
( ([TIME[2012-01-28 11:01:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=6925&to=6926>

[2] [CITE[''''''[''''''whatwg'''''']'''''' Adding crossorigin="" to more elements]]
( ([TIME[2012-11-29 00:50:22 +09:00]] 版))
<http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-November/038153.html>

[3] [CITE@en[Web Applications 1.0 r7548     Support <script crossorigin>.]]
( ([TIME[2012-11-29 09:23:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7547&to=7548>

[4] [CITE@en[Web Applications 1.0 r7549     Support <link crossorigin>.]]
( ([TIME[2012-11-29 09:42:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7548&to=7549>

[5] [CITE@en[Web Applications 1.0 r6142     First draft for working out how to use CORS with <img>, <video>, and <audio>.]]
( ([TIME[2011-05-18 10:09:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=6141&to=6142>

[6] [CITE@en[Web Applications 1.0 r6147      Change cross-origin='' to crossorigin='' since people don't seem to like hyphens. Poor hyphens.]]
( ([TIME[2011-05-24 06:29:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=6146&to=6147>

[7] [CITE@en[Web Applications 1.0 r8727     Make .crossOrigin = null remove the content attribute.]]
( ([TIME[2014-08-29 07:00:00 +09:00]] 版))
<http://html5.org/r/8727>

[8] [CITE@en[Sync with http://html5.org/r/8727 (Make .crossOrigin = null remove the c... · a7c6ed1 · ResponsiveImagesCG/picture-element]]
( ([TIME[2014-09-09 14:04:19 +09:00]] 版))
<https://github.com/ResponsiveImagesCG/picture-element/commit/a7c6ed18e55299c5309060f5ea92d0a2c75febef>

[FIG(quote)[
[FIGCAPTION[
[9] [CITE@en-US[Site Compatibility for Firefox 22 - Mozilla | MDN]]
([TIME[2014-05-03 01:58:20 +09:00]] 版)
<https://developer.mozilla.org/en-US/Firefox/Releases/22/Site_compatibility#HTMLMediaElement.crossorigin_and_HTMLInputElement.inputmode_have_been_renamed>
]FIGCAPTION]

> HTMLMediaElement's crossorigin property has been renamed to crossOrigin,

]FIG]

[10] [CITE@en[Integrate Fetch into HTML · whatwg/html@7c5555a]]
([TIME[2015-09-18 19:12:17 +09:00]] 版)
<https://github.com/whatwg/html/commit/7c5555a16f2920c02244c10756bb2f1a11e87a22>

[11] [CITE@en[Update HTML links and update crossOrigin IDL attribute type. · w3c/svgwg@f55a907]]
([TIME[2016-01-19 10:41:14 +09:00]] 版)
<https://github.com/w3c/svgwg/commit/f55a9071772fd98fada0ae9aad5027b569fb30b8>

[12] [CITE@en[Add <script type="module"> and module resolution/fetching/evaluation · whatwg/html@cd1a9fb]]
([TIME[2016-01-21 22:16:13 +09:00]] 版)
<https://github.com/whatwg/html/commit/cd1a9fb1e83f7d0bc30be8b34ecdaf444a0b19a4>

[13] [CITE@en[Use "credentials mode" instead of "CORS setting" for modules · whatwg/html@7a0ce07]] ([TIME[2016-02-04 17:51:18 +09:00]] 版) <https://github.com/whatwg/html/commit/7a0ce073a8fbade8f44d0e2d4c709ad7cf3ee312>

[23] [CITE@en[Perform 401 processing for "same-origin" scenarios]]
( ([[annevk]]著, [TIME[2016-06-07 20:45:09 +09:00]]))
<https://github.com/whatwg/fetch/commit/7e043ab1324c1144be3f69ff4fbb972781e6511a>

[26] [CITE@en[Vary HTTP cache on credentials mode · Issue #307 · whatwg/fetch]]
([TIME[2017-08-24 16:54:46 +09:00]])
<https://github.com/whatwg/fetch/issues/307>

[27] [CITE@en[Limit crossOrigin reflection to only known values]]
([[ayg]]著, [TIME[2017-08-21 22:07:53 +09:00]])
<https://github.com/whatwg/html/commit/d967dc0120c137d0eb22808d4eaac0726cd8ea78>

[29] [CITE@en[Make integrity="" work on module scripts]]
([[domenic]]著, [TIME[2017-09-14 18:00:24 +09:00]])
<https://github.com/whatwg/html/commit/9275d955dcd604e959cfcc672e0c234b1b8c00db>

[30] [CITE@en[Add <link> rel="modulepreload"]]
([[domenic]]著, [TIME[2017-12-15 05:04:40 +09:00]])
<https://github.com/whatwg/html/commit/7c28027b80208aa6b126fa7b086c44877f584178>

[31] [CITE@en[Editorial: add crossorigin="" to list of common media attributes]]
([[Garee]]著, [TIME[2018-12-11 20:16:37 +09:00]])
<https://github.com/whatwg/html/commit/edc1e95a444871314554a4b8efd33c2472c20357>

[32] [CITE@en[Wrong mention of attributes in audio element documentation · Issue #4159 · whatwg/html]]
([TIME[2019-05-31 14:41:58 +09:00]])
<https://github.com/whatwg/html/issues/4159>

[33] [CITE@en[Add audio crossorigin attr to list of common attrs by Garee · Pull Request #4221 · whatwg/html]]
([TIME[2019-05-31 14:42:17 +09:00]])
<https://github.com/whatwg/html/pull/4221>

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