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HTML 5 Reference

HTML 5 Tags
HTML 5 Attributes
HTML 5 Events

HTML 5 Tags

<!-->
<!DOCTYPE>
<a>
<abbr>
<acronym>
<address>
<applet>
<area>
<article>
<aside>
<audio>
<b>
<base>
<basefont>
<bdo>
<big>
<blockquote>
<body>
<br>
<button>
<canvas>
<caption>
<center>
<cite>
<code>
<col>
<colgroup>
<command>
<datalist>
<dd>
<del>
<details>
<dfn>
<dir>
<div>
<dl>
<dt>
<em>
<embed>
<fieldset>
<figcaption>
<figure>
<font>
<footer>
<form>
<frame>
<frameset>
<h1> - <h6>
<head>
<header>
<hgroup>
<hr>
<html>
<i>
<iframe>
<img>
<input>
<ins>
<keygen>
<kbd>
<label>
<legend>
<li>
<link>
<map>
<mark>
<menu>
<meta>
<meter>
<nav>
<noframes>
<noscript>
<object>
<ol>
<optgroup>
<option>
<output>
<p>
<param>
<pre>
<progress>
<q>
<rp>
<rt>
<ruby>
<s>
<samp>
<script>
<section>
<select>
<small>
<source>
<span>
<strike>
<strong>
<style>
<sub>
<summary>
<sup>
<table>
<tbody>
<td>
<textarea>
<tfoot>
<th>
<thead>
<time>
<title>
<tr>
<tt>
<u>
<ul>
<var>
<video>
<xmp>


 

HTML 5 <!DOCTYPE> Declaration


Example

An HTML 5 document with the correct doctype:

<!DOCTYPE HTML>
<html>
<head>
<title>Title of the document</title>
</head>

<body>
The content of the document......
</body>

</html>

View it »

Definition and Usage

The <!DOCTYPE> declaration must be the very first thing in your HTML5 document, before the <html> tag. This tag tells the browser which HTML specification the document uses.

The doctype declaration is not an HTML tag; it is an instruction to the web browser about what version of the markup language the page is written in.

It is important that you specify the doctype in all HTML documents, so that the browser knows what type of document to expect.

The doctype in HTML 4.01 required a reference to a DTD, because HTML 4.01 was based on SGML. HTML 5 is not based on SGML, and does not require a reference to a DTD, but need the doctype for browsers to behave as they should.


Differences Between HTML 4.01 and HTML 5

There are 3 different doctypes in HTML 4.01, In HTML 5 there is only one:

<!DOCTYPE HTML>

Tips and Notes

Note: The <!DOCTYPE> tag does not have an end tag.

Tip: The <!DOCTYPE> declaration is NOT case sensitive.