[5] [CITE@ja[Google]], [TIME[2024-08-24T08:20:21.000Z]], [TIME[2011-06-03T15:37:47.880Z]] <https://web.archive.org/web/20110603153735/http://www.google.com/intl/ja/webmasters/+1/button/>

[2] [CITE@en[Markup | 2019 | The Web Almanac by HTTP Archive]], [TIME[2024-08-24T08:18:50.000Z]] <https://almanac.httparchive.org/en/2019/markup>


[3] [CITE@en[Add +1 to help your site stand out | Google Search Central Blog | Google for Developers]], [TIME[2011-06-01T07:00:00.000Z]], [TIME[2024-08-24T08:19:25.122Z]] <https://developers.google.com/search/blog/2011/06/add-1-to-help-your-site-stand-out>

[4] [CITE@ja[+1 ボタンが日本のウェブマスターの皆さまにもご利用頂けるようになりました | Google 検索セントラル ブログ | Google for Developers]], [TIME[2011-06-01T07:00:00.000Z]], [TIME[2024-08-24T08:19:41.035Z]] <https://developers.google.com/search/blog/2011/06/1?hl=ja>


[1] [CITE@ja[Googleが「+1」(プラスワン)ボタンを一般公開]], [TIME[2024-08-24T08:18:29.000Z]] <https://www.suzukikenichi.com/blog/you-can-get-google-plus-one-button-now/>

[6] [CITE[Google +1 ボタンを表示する - DoboWiki]], [TIME[2024-08-24T08:21:05.000Z]] <https://wiki.dobon.net/index.php?ShareButton%2FGoogle%2B1>




[FIG(data)[ [216] [[HTML要素概説]]

:[F[要素名]]:[CODE[g:plusone]]
:日付:[TIME[2011-06]]
:説明:
[TIME[2011-06]]に提供開始された [[Google]] の [[+1ボタン]]は、
[CODE[g:plusone]]
を使っていた。
[SRC[>>8]]
当時は多くの[[Webページ]]が使っていた。
:出典:
[REFS[

-
[8] 
[DFN[Google+1]]:
[CITE@ja[Google]], [TIME[2024-08-24T08:20:21.000Z]], 
[TIME(.published)[2011-06-03T15:37:47.880Z]] <https://web.archive.org/web/20110603153735/http://www.google.com/intl/ja/webmasters/+1/button/>
- 
[7] 
[DFN[InAW:+1]]:
[CITE@en[Inside AdWords: The +1 button & AdWords]], 
Posted by [DATA(.author)[[[Dan Friedman]]]], Inside AdWords crew,
[TIME(.published)[Wednesday, March 30, 2011][2011-03-30]],
[TIME[2024-09-02T07:37:11.000Z]], [TIME[2024-10-06T03:27:02.100Z]] <https://adwords.googleblog.com/2011/03/1-button-adwords.html>

]REFS]
:注釈:
-
[DFN[[RUBYB@ja[+1ボタン]@en[+1 button]]]]
[[Google]]
が提供していた[[いいね]]機能。
[SRC[>>8]]
[SRC[>>7]]
技術的には、
[[Google]] が[[Webページ]]埋め込み用に提供していた 
[[JavaScript]] 付き [[HTML]] 片。

]FIG]