Current DOCTYPE:
"!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
Required DOCTYPE:
"!DOCTYPE HTML"
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possible duplicate of [What are the different doctypes in html and what do they mean?](http://stackoverflow.com/questions/255470/what-are-the-different-doctypes-in-html-and-what-do-they-mean) – JJJ Jul 04 '14 at 12:12
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As far as I'm aware, some browsers will display documents without a system identifier (i.e. without the DTD part) in quirks mode. So those browsers may show a difference after changing to a proper one, yes. – Mr Lister Jul 05 '14 at 16:22
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Thanks @MrListerhana , Right now i'm developing some Web Application, i saw some changes in alignment after changing XHTML to HTML 5 Doc-type. So is there any possibility to give error while reading DATA from back-end. – Prashanth - Design Jul 06 '14 at 17:49
1 Answers
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd >
is to tell the browser that the document is XHTML 1.0
<!DOCTYPE HTML>
is to tell the browser that this document uses HTML5, the latest version of HTML available, also a 'living standard' from w3c
It is perfectly fine to change it, as HTML5 continue to support the older function.
(Just like 'opening a word 2003 file .doc' with Microsoft Word 2007)
Kristian
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Thanks @Kristian. By changing will it effect in reading data from back-end. like from .JS or .XML file – Prashanth - Design Jul 06 '14 at 17:51
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It shouldn't. It just tell the browser after all. Nothing should change. – Kristian Jul 10 '14 at 04:38