before

before

仕様書

歴史

CSS2

[3] CSS3 Generated and Replaced Content Module ( ( 版)) <http://www.w3.org/TR/2003/WD-css3-content-20030514/#inserting>

[4] CSS Generated Content Module Level 3 ( ( 版)) <http://dev.w3.org/csswg/css3-content/#inserting-content-into-an-element-the-be>

[5] Selectors ( ( 版)) <http://www.w3.org/TR/1998/WD-css2-19980128/selector.html#didx-pseudo-elements-3>

[6] Issue 255482 - chromium - DOM4: prepend, append, before, after & replace - An open-source project to help move the web forward. - Google Project Hosting ( ( 版)) <https://code.google.com/p/chromium/issues/detail?id=255482>

[7] 911477 – Implement DOM4 methods: prepend(), append(), before(), after() and replace() ( ( 版)) <https://bugzilla.mozilla.org/show_bug.cgi?id=911477>

[8] Mark new APIs as [Unscopeable] https://www.w3.org/Bugs/Public/show_bug.c... · b2eb25f · whatwg/dom ( ( 版)) <https://github.com/whatwg/dom/commit/b2eb25f751cb71a6ffacebe714c27667d3591e6b>

[9] Define node document for new Text nodes · whatwg/dom@36ef32e ( 版) <https://github.com/whatwg/dom/commit/36ef32ebc6c8318c1da27c2e9fa178398ff401f6>

[10] Editorial: flip non-null/otherwise conditions · whatwg/dom@8d281a3 ( 版) <https://github.com/whatwg/dom/commit/8d281a354690abfda5ff558c461747f304f11788>

[11] Add [CEReactions] annotations to mutating methods · whatwg/dom@3cd02d1 ( 版) <https://github.com/whatwg/dom/commit/3cd02d139c159a31fbb400e03932652c72fc7812>