* 仕様書

[REFS[
- [6] [CITE@en-US-x-hixie[HTML Standard]] ([TIME[2012-11-16 20:26:18 +09:00]] 版) <http://www.whatwg.org/specs/web-apps/current-work/#the-external-interface>
]REFS]

* 実装

[REFS[
- [3]
[CITE@en-us[external Object (window)]] ([TIME[2007-02-17 23:14:19 +09:00]] 版) <http://msdn.microsoft.com/workshop/author/dhtml/reference/objects/external.asp>
]REFS]

* メンバー

[FIG(short list)[
- [CODE(DOMm)@en[[[AddService]]]]
- [CODE(DOMm)@en[[[ContentDiscoveryReset]]]]
- [4] [CODE(DOMm)@en[[[msSiteModeClearBadge]]]]
- [5] [CODE(DOMm)@en[[[msSiteModeRefreshBadge]]]]
- [CODE(DOMa)@en[notify][window.notify.external]]
]FIG]

* 歴史

** 標準化

[REFS[
- [1] [CITE@en[Web Applications 1.0 r6140     Define window.external and the SearchProvider APIs, since they are implemented by several browsers to some extent.]]
( ([TIME[2011-05-17 08:30:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=6139&to=6140>
- [2] [CITE@en[Web Applications 1.0 r8601     match reality: window.external is '''''''''['''''''''Replaceable''''''''']''''''''']]
( ([TIME[2014-05-03 08:20:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=8600&to=8601>
]REFS]

[7] [CITE@en[Make window.external methods no-ops · whatwg/html@8edcc5b]]
([TIME[2016-04-27 12:33:49 +09:00]] 版)
<https://github.com/whatwg/html/commit/8edcc5b97c54b0f007bb3552cd5a326e80dcbbde>

[8] [CITE@en[Expose window.External]]
([[annevk]]著, [TIME[2019-01-16 17:59:12 +09:00]])
<https://github.com/whatwg/html/commit/ee1b2ac7a6e5b862c2c3f7e4dc8f8215b2a5d6bc>

[9] [CITE@en[Expose self.External by annevk · Pull Request #4296 · whatwg/html]]
([TIME[2019-06-18 15:20:39 +09:00]])
<https://github.com/whatwg/html/pull/4296>

[10] [CITE@en[Implementation-defined typeof still necessary? · Issue #1440 · tc39/ecma262]]
([TIME[2020-01-12 12:30:45 +09:00]])
<https://github.com/tc39/ecma262/issues/1440>