歴史

[11] IRC logs: freenode / #whatwg / 20100106 ( 版) http://krijnhoetmer.nl/irc-logs/whatwg/20100106#l-365

[12] hidden Property (EMBED, HTMLEmbedElement Constructor) ( 版) http://msdn.microsoft.com/en-us/library/ms533782(VS.85).aspx

[13] Safari Dev Center: Safari HTML Reference: Supported Attributes ( 版) http://developer.apple.com/safari/library/documentation/AppleApplications/Reference/SafariHTMLRef/Articles/Attributes.html#//apple_ref/html/attribute/hidden

[14] Web Applications 1.0 r6895 Tweak hidden='''s definition a bit to be more consistent with likely usage scenarios. ( ( 版)) http://html5.org/tools/web-apps-tracker?from=6894&to=6895

[15] Web Applications 1.0 r7284 Ignore hidden= elements in outlines.]] ( ( 版)) http://html5.org/tools/web-apps-tracker?from=7283&to=7284

[16] IRC logs: freenode / #whatwg / 20121006 ( ( 版)) http://krijnhoetmer.nl/irc-logs/whatwg/20121006

[17] Web Applications 1.0 r7453 Improve compatibility for <embed hidden> ( ( 版)) http://html5.org/tools/web-apps-tracker?from=7452&to=7453

[18] [whatwg] hidden="" should be "display:none !important" in the UA stylesheet ( ( 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-November/037907.html

[20] Web Applications 1.0 r4846 Cover more possible misuses for hidden=. Anyone got good suggestions of short examples where hidden= is useful? All the examples I can think of are huge... ( ( 版)) http://html5.org/tools/web-apps-tracker?from=4845&to=4846

[23] [whatwg] hidden attribute useless with display: flex? ( ( 版)) http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2014-April/254191.html

[24] Web Applications 1.0 r8843 Update the way some of the selectors are written to use more modern selector features. ( ( 版)) https://html5.org/r/8843

[25] BB Programming Lab. ( 版) http://hp.vector.co.jp/authors/VA011973/prg_plgin1.htm

「embedの隠し」は、HIDDEN属性を追加します。

【例】

<EMBED SRC="audiplay.aiff" TYPE="audio/x-aiff" HIDDEN>

[1] Google検索の結果には hiddenhidden="" な要素の内容も表示されてしまうようです。