What is the correct way to declare an HTML5 Doctype.
HtmlDoctypeHtml Problem Overview
What is the correct way to use start tag when creating with HTML5
IE: HTML 4 Strict is like this
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
Html Solutions
Solution 1 - Html
The standard has been simplified because the previous doctypes were too cryptic. The new doctype is simply <!DOCTYPE html> . You may wonder why it is not <!DOCTYPE html5> but it is simply because it is just an update to the standard of HTML and not a new version of anything. As you can see below, all elements can now have a language attribute.
> The <html> element is the root element of a document. Every document
> must begin with this element, and it must contain both the <head> and
> <body> elements.
>
> It is considered good practice to specify the primary language of the
> document on this element using the lang attribute.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Hello World</title>
</head>
<body>
<h1>Hello World</h1>
<p>
Jamie was here.
</p>
</body>
</html>
More info: https://dev.w3.org/html5/html-author/#doctype-declaration
Solution 2 - Html
you just use
<!DOCTYPE html>
<html>
</html>
Solution 3 - Html
First of all, html5 doctype is not case sensitive.
Either one of these three will work:
-
<!DOCTYPE html> -
<!DOCTYPE HTML> -
<!doctype html>
You can check the validity here.
Solution 4 - Html
It's as simple as
<!DOCTYPE html>
Solution 5 - Html
According to the WWW Consortium, the organization responsible setting current web standards, no one has answered this correctly.
The current standard for language declaration is
> Always use a language attribute on the html tag to declare the default
> language of the text in the page. When the page contains content in another
> language, add a language attribute to an element surrounding that content.
> Use the lang attribute for pages served as HTML, and the xml:lang attribute
> for pages served as XML. For XHTML 1.x and HTML5 polyglot documents, use both
> together.
W3C HTML Language Tag Page
Here is the answer regarding DOCTYPE declaration
> Use the following markup as a template to create a new HTML document using a
> proper Doctype declaration. See the list below if you wish to use another DTD.
W3C DOCTYPE Standards
<!DOCTYPE html>
<html>
<head>
<title>An HTML standard template</title>
<meta charset="utf-8" />
</head>
<body>
<p>… Your HTML content here …</p>
</body>
</html>
Hope this helps.
Solution 6 - Html
You use...
<!DOCTYPE html>
followed by your HTML tag etc..
Solution 7 - Html
You only need this:
<!DOCTYPE html>
<html>
...
There are several points here. This is supported by all browsers, even old ones like IE6/IE7. All browsers actually nee "html" part from doctype declaration to jump into standards mode.
Solution 8 - Html
<!-- simplified doctype works for all previous versions of HTML as well -->
<!doctype html>
Learning Resource:
Solution 9 - Html
The start tag <html> is optional in HTML5, as in HTML 4.01. If used, it must be the first tag. It has different optional attributes: the global attributes of HTML5, and the special manifest attribute. The most common useful attribute in the <html> tag is the lang attribute.
(The doctype declaration is something quite different, and not a tag at all.)
Solution 10 - Html
The clearest most definitive answer of what the standard says seems to be for HTML 5.3 at:
http://w3c.github.io/html/syntax.html#the-doctype
Note especially the list-items 1 and 3 which specify that the doctype-statement is case-insensitive. Also note the number of spaces inside the statement can vary.
And note the clause "A DOCTYPE is a required preamble."