What is DIV & SPAN
 

hello coders,
nowa days i see everybody is using DIV and SPAN in there webpage .i have a little idea about this but i wanna know everything about this.can you tell me where can i get complete information about DIV and SPAN.you can also use this forum to clear my doubt.i wanna know everything about DIV and SPAN.
i also see that people are using

        <tr>

                <th class="thLeft" width="150" height="26" nowrap="nowrap">something</th>

                <th class="thRight" nowrap="nowrap">something</th>

        </tr>

what is this <th> </th> tags for?
please satisfy my hunger for knowledge.
thank you.

Re: What is DIV & SPAN
 

DIV is "division", and is a block-level container object. It's used to divide a page into discrete, high-level "sections". For example, if you had a navigational section and content section, each would go into its own "div".

SPAN is an inline container object. It is used to set off elements that appear "within" content. It is mainly used to replace the formatting tags such as <b>, <i>, <em>, and <strong>. Since those are presentational tags, they have been superceded by CSS.

The <th> is "Table Header", and is meant for just that... to specify the column headers of a table.

Complete information on all things HTML, XHTML, etc:

http://www.w3.org/TR/REC-html40/struct/global.html