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WebArtz - The Web Design Forum » Web Designing & Coding » HTML (Hyper Text Markup Language) » What is DOCTYPE?

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1What is DOCTYPE? Empty What is DOCTYPE? Wed Dec 30, 2009 9:50 am

karna

karna
Registered Member
Registered Member
Why do we need to give a doctype? Cant browsers render properly without them?

2What is DOCTYPE? Empty Re: What is DOCTYPE? Wed Dec 30, 2009 12:34 pm

ankillien

ankillien
Administrator
Administrator
A doctype is telling the browser what type of code you have (HTML 4.01 Strict, HTML 4.01 Quirks Mode, XHTML 1.1 Strict, XHTML 1.1 Transitional, etc.) This will change the way the browser looks at the code, and how it renders it.

3What is DOCTYPE? Empty Re: What is DOCTYPE? Thu Dec 31, 2009 9:02 pm

karna

karna
Registered Member
Registered Member
Thanks for the info ankillien. I wonder how come pages work properly even without a doctype?
I have seen many pages that have no doctype but they work properly in browser.

4What is DOCTYPE? Empty Re: What is DOCTYPE? Sat Jan 02, 2010 9:15 am

ankillien

ankillien
Administrator
Administrator
If you don't have a doctype, it assumes HTML 4.01 Transitional.
And thats why it work properly for most pages Razz

5What is DOCTYPE? Empty Re: What is DOCTYPE? Wed Jan 11, 2012 4:42 pm

bryanbell


Registered Member
Registered Member
DocType is used to declare the type of document. You cannot say that DocType is an HTML or XML element. The declaration of DocType is always on the very top of the documents.

For i.e.

<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">



Last edited by bryanbell on Tue Sep 11, 2012 6:14 pm; edited 1 time in total

6What is DOCTYPE? Empty Re: What is DOCTYPE? Thu Mar 15, 2012 4:34 pm

lailagwb


Banned Member
Banned Member
The <!DOCTYPE> declaration must be the very first thing in your HTML document, before the <html> tag.

The <!DOCTYPE> declaration is not an HTML tag; it is an instruction to the web browser about what version of HTML the page is written in.

The <!DOCTYPE> declaration refers to a Document Type Definition (DTD). The DTD specifies the rules for the markup language, so that the browsers render the content correctly.

Tip: Always add the <!DOCTYPE> declaration to your HTML documents, so that the browser knows what type of document to expect.

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7What is DOCTYPE? Empty Re: What is DOCTYPE? Fri Jan 11, 2013 5:57 pm

ahamadhussain


Registered Member
Registered Member
Hi....

!DOCTYPE declaration is a top-level tag-like reference known as a Public Text Identifier
!DOCTYPE declaration is called a Formal Public Identifier (FPI.)
General Format:

<!DOCTYPE [Top Element] [Availability] "[Registration]// [Organization]// [Type] [Label]// [Language]" "[URL]">

8What is DOCTYPE? Empty Re: What is DOCTYPE? Wed Jan 30, 2013 3:21 pm

rhae29


Registered Member
Registered Member
The <!DOCTYPE> declaration must be the very first thing in your HTML document, before the <html> tag.

The <!DOCTYPE> declaration is not an HTML tag; it is an instruction to the web browser about what version of HTML the page is written in.

In HTML 4.01, the <!DOCTYPE> declaration refers to a DTD, because HTML 4.01 was based on SGML. The DTD specifies the rules for the markup language, so that the browsers render the content correctly.

HTML5 is not based on SGML, and therefore does not require a reference to a DTD.

Tip: Always add the <!DOCTYPE> declaration to your HTML documents, so that the browser knows what type of document to expect.

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