What does "<html xmlns="http://www.w3.org/1999/xhtml">" do?
<html xmlns="http://www.w3.org/1999/xhtml"> <!DOCTYPE html> <html> <head> Everything works fine. And when I don't, CSS "messes" up, everything becomes different and ...
Does HTML 5 need `<html …
May 20, 2014 · When writing a html 5 doctype, are you supposed to include the <html xmlns="http://www.w3.org/1999/xhtml"> as you did when previously using HTML4 doctype or …
html - What does the xmlns attribute do? - Stack Overflow
Oct 15, 2013 · From the W3Schools: the xmlns attribute specifies the xml namespace for a document. This basically helps to avoid namespace conflicts between different xml …
Does xmlns:xlink="http://www.w3.org/1999/xlink" still have a …
May 11, 2021 · Depends on the DOCTYPE, HTML5 is namespace ignorant, XML isn't, XHTML neither.
HTML5 <html> attributes xmlns, lang, xml:lang - Stack Overflow
Dec 1, 2010 · Oh, too bad that if you don't specify the xmlns attribute on html, it's not valid XHTML, and if you're aiming for polyglot markup that will render correctly when served as …
HTML Document type and XML namespace - Stack Overflow
May 31, 2016 · <html dir="ltr" xmlns="http://www.w3.org/1999/xhtml"> What does the xml namespace do that it is needed inside the HTML tag in addition to the DOCTYPE definition?
Firefox add <a xmlns="http://www.w3.org/1999/xhtml">
Nov 16, 2015 · A question about Firefox adding an xmlns attribute to anchor tags and how to resolve it.
Html, xmlns, namespaces, xml - Stack Overflow
Nov 14, 2015 · I just encoutered some problems while parsing html documents with nekohtml + dom4j. I found out my xpath expressions were not working anymore because of a new default …
<!DOCTYPE html PUBLIC …… の部分の意味は何ですか？
また、 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja"> は、この文書の XML 名前空間 と、文書を記述している自然言語の指定を行っています。 日本語の XHTML 文 …
When is an xmlns declaration in HTML5 really necessary
Jun 25, 2015 · @j08691 Thanks, that actually does answer my question. The reason I couldn't find it in searches prior to asking my question is probably because it's filed under XML rather …