HTML has been in continuous evolution since it was introduced to the Internet in the early 1990s. Some features were introduced in specifications; others were introduced in software releases. In some respects, implementations and author practices have converged with each other and with specifications and standards, but in other ways, they continue to diverge.HTML5 defines the fifth major revision of the core language of the World Wide Web, HTML. "HTML5 differences from HTML4" describes the differences between HTML4 and HTML5 and provides some of the rationale for the changes. This document may not provide accurate information as the HTML5 specification is still actively in development. When in doubt, always check the HTML5 specification itself.
HTML4 became a W3C Recommendation in 1997. While it continues to serve as a rough guide to many of the core features of HTML, it does not provide enough information to build implementations that interoperate with each other and, more importantly, with a critical mass of deployed content. The same goes for XHTML1, which defines an XML serialization for HTML4, and DOM Level 2 HTML, which defines JavaScript APIs for both HTML and XHTML. HTML5 will replace these documents.
The HTML5 draft reflects an effort, started in 2004, to study contemporary HTML implementations and deployed content. The draft:
Defines a single language called HTML5 which can be written in HTML syntax and in XML syntax.
Defines detailed processing models to foster interoperable implementations.
Improves markup for documents.
Introduces markup and APIs for emerging idioms, such as Web applications.
new things in html5 are
Character Encoding
For the HTML syntax of HTML5, authors have three means of setting the character encoding:
At the transport level. By using the HTTP Content-Type header for instance.
Using a Unicode Byte Order Mark (BOM) character at the start of the file. This character provides a signature for the encoding used.
Using a meta element with a charset attribute that specifies the encoding within the first 512 bytes of the document. E.g. could be used to specify the UTF-8 encoding. This replaces the need for although that syntax is still allowed.
For the XML syntax, authors have to use the rules as set forth in the XML specifications to set the character encoding.
The DOCTYPE
The HTML syntax of HTML5 requires a DOCTYPE to be specified to ensure that the browser renders the page in standards mode. The DOCTYPE has no other purpose and is therefore optional for XML. Documents with an XML media type are always handled in standards mode.
MathML and SVG
The HTML syntax of HTML5 allows for MathML and SVG elements to be used inside a document. E.g. a very simple document using some of the minimal syntax features could look like:
SVG in text/html
A green circle:
More complex combinations are also possible. E.g. with the SVG foreignObject element you could nest MathML, HTML, or both inside an SVG fragment that is itself inside HTML.
New Elements
The links in this section may stop working if elements are renamed and/or removed. They should function in the latest version of this draft.
The following elements have been introduced for better structure:
section represents a generic document or application section. It can be used together with the h1, h2, h3, h4, h5, and h6 elements to indicate the document structure.
article represents an independent piece of content of a document, such as a blog entry or newspaper article.
aside represents a piece of content that is only slightly related to the rest of the page.
hgroup represents the header of a section.
header represents a group of introductory or navigational aids.
footer represents a footer for a section and can contain information about the author, copyright information, et cetera.
nav represents a section of the document intended for navigation.
figure represents a piece of self-contained flow content, typically referenced as a single unit from the main flow of the document.
Example
figcaption can be used as caption (it is optional).
garbarino
2016-11-12 13:10:25 UTC
Difference Between Html4 And Html5
kaley
2016-06-02 07:19:02 UTC
HTML tags are lowercase and XHTML tags are lower case...............think thats how it works
sanjay jain
2014-09-02 08:09:50 UTC
HTML5 is attempting to discover and codify this error handling, so that browser developers can all standardize and greatly reduce the time and money required to display things consistently. As well, long in the future after HTML has died as a document format, historians may still want to read our documents, and having a completely defined parsing algorithm will greatly aid this.
You can find a reference tutorial here for learning HTML5 : http://www.html5andcss3.org
Sajin
2014-04-20 00:45:33 UTC
HTML4 & HTML5 has a lot difference ,version 4 was used to create static design whereas in version 5 was designed to replace html4,xhtml & html DOM level 2 thereby enabling designers to give more control on design & interactiveness. To know more about HTML5 visit this link http://techtutorz.blogspot.in/2014/04/introduction-to-html5.html it's really good
The HTML4 is the previous version of HTML, There was some technical gap between the HTML and it's other supported plugins, that has been removed in HTML5 Version.
There is a huge difference between both as HTML 5 has mainly new added features and tags in it, It has a navigation tag,section tag,aside, footer and even for audio and videos. I thing it will be more flexible then that of HTML 4. HTML 5 is combination of CSS, JAVA and other languages and it will not require to have any other add-ons.
?
2010-09-24 02:30:28 UTC
one has 4 and one has 5
rtfm
2010-09-24 04:29:50 UTC
http://www.w3.org/TR/html5-diff/
MITUL PATEL
2010-09-24 02:31:52 UTC
ALMOST SAME
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