You should be concerned with: the future of HTML, Part 2: XHTML 2.0
The series is composed of two parts, Edd Dumbill author of the Web browser developers and standards of the proposed HTML different methods. This series will be presented by the WHATWG norms in a progressive interpretation methods and XHTML proposed by the W3C overturn the radical approach. In addition, the author also briefed W3C new Rich Client Activity. This paper is the series of Part 2, Edd, the eyes of the ongoing work on the W3C, the Web marker to indicate the future.
The series on an article, I explain why they wanted to improve the HTML, including amendments to the mistakes of the past and adapt to Web pages and applications to the increasing demands. I introduced the Web Hypertext Application Technology Working Group (WHATWG) in the creation of Web Applications 1.0 and Web Forms 2.0 specification aspects of the work which is a Web browser makers composed of loosely Commonwealth.
This paper will introduce the World Wide Web Consortium (W3C) build a next-generation version of XHTML norms, as well as their application to Ajax represented by the "rich client" behavior demand responses.
W3C has four working groups are being established norms of some particularly interesting:
- HTML (now XHTML)
- XForms
- Web API
- Web Application Format
References can be found in these norms links. This paper mainly discusses HTML Working Group's study, but it is necessary to discuss it as a background knowledge of other norms, as these studies will create Web future.
references), which describes the design of XHTML 2.0 goals:
- As far as possible the use of XML: If a language of XML has been in existence, not to repeat or re-invented.
- Structure than that: I thank the CSS style sheets, HTML is no longer require a specialized that label.
- HTML makes it easy to prepare: delete some HTML useless features.
- Higher accessibility of equipment neutrality: try to avoid the assumption that the way documents read.
- Improved internationalization.
- Better form: the long-awaited improvement!
- Reduce the need for the script: HTML script itself contains typical usage.
- Semantic better: to HTML and Semantic Web applications more easily integrated.
HTML has been used for any of the people, these objectives are clearly worth looking forward to. Now, I will be a little detailed inspection XHTML 2.0 achieving some of the ways these objectives.
References) request line markings in the past, this attribute value in this is not possible.
XHTML 2.0 <object> elements provided in the image contains more general form of the element can be used to contain any type of object, from the picture, the film Flash or Java technology to the executable code. This can be clever technique, based on the browser's ability to better appointed <object> multi-element can be nested. For example, the outer layer is a Flash movie, which includes an AVI video files, then into the layer is a static picture, in the end the core of nested object is a text. For more information, please XHTML Object Module (reference in the link).
see references).
Finally, the third triple from about values and the role of property attributes element content is, if content is empty attribute value is not content. This is one example, if you use the HTML <meta> labels will be very familiar with, it designated the first page (page header) of the founders:
<html Xmlns="http://www.w3.org/2002/06/xhtml2/" xml:lang="en"> <head> <title> Edd Dumbill's Home Page </ title> <meta property = "dc : creator "> Edd Dumbill </ meta> </ head> ...</ html>
Pemberton is now to look at this example, it shows how the real document of the use of metadata:
<h Property="title"> Welcome to my home page </ h>
This means that the title documents is the subject of XHTML 2.0, and its designated title for the industry. Finally do not have to write each document will be subject twice!
A simple thank called GRDDL (from the language dialects pickers resource description, Gleaning Resource Descriptions from Dialects of Languages, see References) conversion technology, there are now 2.0 XHTML documents from the extract RDF metadata standards the.
XHTML 2.0 in other areas there are also many changes, the majority and parallel development of the norms (such as XForms). Here are unable to introduce XHTML 2.0 features. But in any case, compared with XHTML 1.0, XHTML 2.0 is a great leap forward.
References) metadata.
Finally we must pay attention to is that XHTML 2.0 specification is not yet complete. The time of writing, the standard is still in the draft stage of the W3C's work, that is to say, as recommended in the standards, there are still some way to go. Is important, it must go through the standard recommended candidate stage of this phase for the collection of achieving experience.
W3C HTML Working Group in accordance with the plan, in 2007 before XHTML 2.0 is unlikely to become a W3C recommendation standards. That is to say 2006 was a crucial year for the deployment of the experience.
W3C XHTML WHATWG HTML 2.0 and 5 Comparison
This paper introduces these two WHATWG HTML W3C XHTML 2.0 and 5 of the main features. These two completely different: the grass-roots organizations WHATWG hope that the gradual improvement of HTML 4 and XHTML 1.0, and the support of the HTML language XHTML 2.0 pairs conducted a thorough remodeling.
Although different, these two methods are still comparable. WHATWG norms of some preliminary results have already been achieved in the browser, some of the WHATWG HTML is the fact that expansion of the description. Some of these important elements, such as XMLHttpRequest will enter the Rich Client Activity W3C standards. WHATWG Web standards in the world is effective catalyst.
Some to look farther, XHTML 2.0 Method for Web provides a new glossary, then modular processing XML, CSS and ECMAScript will soon become common things. Embedded devices such as telephone and digital TV there is no need to support a legacy of haphazard Web HTML, can not afford to use pure XML glossary XHTML 2.0 advantage. In addition, accessibility and international characteristics of the new XHTML 2.0 became the first to be deemed to be a common glossary of XML documents, which marked a lot of work based on the solid and economic base.
As in the past, the future of HTML is uncertain, some might call it confusion, but I believe that eventually XHTML 2.0 will be widely accepted and adopted. If this is the only XML Web glossary, there may be some problems, but because the browser to cope with SVG, XForms and other technologies, XHTML 2.0 looks just another XML-based glossary only.
Tags: html, xhtml css, xhtml grammar, xhtml Guide, xhtml markings xhtml manuals, xml xhtml
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