代替

[25] dialog 要素に openModal メソッドがあります。

歴史

[1] HTML5 IRC logs: freenode / #whatwg / 20070427 (2007-04-27 09:57:33 +09:00 版) http://krijnhoetmer.nl/irc-logs/whatwg/20070427#l-127 (名無しさん 2007-04-27 00:59:14 +00:00)

[2] showModalDialog Method (window, Window Constructor) (2009-01-12 18:12:38 +09:00 版) http://msdn.microsoft.com/en-us/library/ms536759(VS.85).aspx

[3] 今さらながらJavaScriptのwindow.showModalDialogについて調べてみた。 - 大人になったら肺呼吸 ( (2013-09-24 02:54:29 +09:00 版)) http://d.hatena.ne.jp/replication/20100117/1263694945

[4] showModalDialog ( (2013-09-24 02:56:17 +09:00 版)) http://msdn.microsoft.com/ja-jp/library/cc428178.aspx

[5] window.showModalDialog - Web API リファレンス | MDN ( (2013-09-03 10:35:20 +09:00 版)) https://developer.mozilla.org/ja/docs/Web/API/window.showModalDialog

[6] showModalDialogの遷移時に新規ウィンドウが開いてしまう問題 - リッチクライアント & 帳票 - @IT ( (2013-09-24 02:58:49 +09:00 版)) http://www.atmarkit.co.jp/bbs/phpBB/viewtopic.php?forum=28&topic=22195

[7] IRC logs: freenode / #whatwg / 20131030 ( (2013-11-01 21:16:51 +09:00 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20131030#l-662

[8] IRC logs: freenode / #whatwg / 20131203 ( (2013-12-04 20:03:08 +09:00 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20131203#l-97

[9] IRC logs: freenode / #whatwg / 20140221 ( (2014-02-23 09:51:18 +09:00 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20140221#l-170

[10] Issue 174073007: Remove deprecated window.showModalDialog() - Code Review ( (2014-02-23 13:18:53 +09:00 版)) https://codereview.chromium.org/174073007/

[11] Removing showModalDialog() from the Web platform - Dev.Opera ( (2014-03-29 16:00:24 +09:00 版)) http://dev.opera.com/articles/view/showmodaldialog/

[12] Bug 26437 – Consider removing showModalDialog ( (2014-07-27 05:44:29 +09:00 版)) https://www.w3.org/Bugs/Public/show_bug.cgi?id=26437

[13] Web Applications 1.0 r8817 deprecate showModalDialog() ( (2014-09-25 07:27:00 +09:00 版)) https://html5.org/r/8817

[14] Web Applications 1.0 r8821 Update the kitchen sink image ( (2014-09-26 07:15:00 +09:00 版)) https://html5.org/r/8821

[15] Chromium Dashboard (2015-03-11 11:42:58 +09:00 版) https://www.chromestatus.com/metrics/feature/timeline/popularity/195

[16] IRC logs: freenode / #whatwg / 20150902 (2015-09-03 12:23:27 +09:00 版) http://krijnhoetmer.nl/irc-logs/whatwg/20150902#l-657

[17] Block modal dialogs by default in sandboxed documents · whatwg/html@bbccfc9 (2015-09-10 00:20:23 +09:00 版) https://github.com/whatwg/html/commit/bbccfc976754def0c187ac8ce5891d2fb20dfc15

[18] 26437 – Consider removing showModalDialog (2015-12-16 14:56:24 +09:00 版) https://www.w3.org/Bugs/Public/show_bug.cgi?id=26437

[19] Remove showModalDialog() by domenic · Pull Request #374 · whatwg/html (2015-12-16 14:57:37 +09:00 版) https://github.com/whatwg/html/pull/374

[20] Remove showModalDialog() · whatwg/html@eec9646 (2015-12-16 14:57:45 +09:00 版) https://github.com/whatwg/html/commit/eec96462b5bd1c7f904a4880bc04dade6efcd597