WHAT IS HTML ?
Stands for HyperText Markup Language, is the predominant markup language for web pages .
HTML is written in the form of HTML elements consisting of "tags" surrounded by angle brackets (like <html>) within the web page content. HTML tags normally come in pairs like <b> and </b>. The first tag in a pair is the start tag, the second tag is the end tag (they are also called opening tags and closing tags).
HTML elements form the building blocks of all websites.
HTML allows images and objects to be embedded and can be used to create interactive forms
HTML can also be used to include Cascading Style Sheets (CSS) to define the appearance and layout of text and other material.
The W3C, maintainer of both HTML and CSS standards, encourages the use of CSS over explicit presentational markup.
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example picture code
<a href="http://www.natural-environment.com/blog/2008/11/07/what-is-the-worlds-largest-rabbit/" target="_blank">
<img src="http://www.quackit.com/pix/worlds_largest_rabbit_2.jpg" width="200" height="261" border="2" alt="Photo of a big bunny rabbit!" />
</a>
then this will appear:
http://www.quackit.com/html/html_table_tutorial.cfm
You can format your tables using Cascading Style Sheets (CSS).
Using CSS, you can specify background colors, border colors, border styles etc.
Also, although HTML has a tag for aligning table contents, and another for specifying a background color, these tags are deprecated.
You are better off using CSS for these tasks.
<table border="1" cellpadding="5" cellspacing="5" width="100%"
style="background-color:yellow;border:3px dashed black;">
<tr>
<th style="text-align:left">Table header</th>
<th style="text-align:left">Table header</th>
</tr>
<tr>
<td width="20%">Table cell 1</td><td>Table cell 2</td>
</tr>
</table>
Attributes specific to this tag:
headers
Specifies a space-separated list of header cells that contain information about this cell. The value needs to correspond with the id of the header cell (which is set using the id attribute). This attribute is useful for non-visual browsers.
abbr
Specifies an abbreviated version of the cell's content. Depending on the browser, it may render this in place of the cell's content if appropriate.
axis
Specifies a category for this td. This can potentially be used to perform queries against the table data and can be beneficial in the context of a speech browser.
| November 24, 1995 | HTML 2.0 was published as IETF RFC 1866. Supplemental RFCs added capabilities:
* November 25, 1995: RFC 1867 (form-based file upload)
* May 1996: RFC 1942 (tables)
* August 1996: RFC 1980 (client-side image maps)
* January 1997: RFC 2070 (internationalization)
In June 2000, all of these were declared obsolete/historic by RFC 2854. |
| January 1997 | HTML 3.2[14] was published as a W3C Recommendation. It was the first version developed and standardized exclusively by the W3C, as the IETF had closed its HTML Working Group in September 1996.[15]
HTML 3.2 dropped math formulas entirely, reconciled overlap among various proprietary extensions and adopted most of Netscape's visual markup tags. Netscape's blink element and Microsoft's marquee element were omitted due to a mutual agreement between the two companies.[13] A markup for mathematical formulas similar to that in HTML wasn't standardized until 14 months later in MathML |
| December 1997 | HTML 4.0[16] was published as a W3C Recommendation. It offers three variations:
* Strict, in which deprecated elements are forbidden,
* Transitional, in which deprecated elements are allowed,
* Frameset, in which mostly only frame related elements are allowed;
Initially code-named "Cougar",[17] HTML 4.0 adopted many browser-specific element types and attributes, but at the same time sought to phase out Netscape's visual markup features by marking them as deprecated in favor of style sheets. HTML 4 is an SGML application conforming to ISO 8879 - SGML.[18] |
| May 2000 | ISO/IEC 15445:2000[21][22] ("ISO HTML", based on HTML 4.01 Strict) was published as an ISO/IEC international standard. In the ISO this standard falls in the domain of the ISO/IEC JTC1/SC34 (ISO/IEC Joint Technical Committee 1, Subcommittee 34 - Document description and processing languages).[21]
As of mid-2008, HTML 4.01 and ISO/IEC 15445:2000 are the most recent versions of HTML. Development of the parallel, XML-based language XHTML occupied the W3C's HTML Working Group through the early and mid-2000s.
[edit] HTML draft version timeline |
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