HTML and XHTML Pocket Reference, 3rd Edition

Name

colgroup — <colgroup> . . . </colgroup>

Defines a conceptual group of columns that form a structural division within a table. A table may include more than one column group. The number of columns in a group is specified either by the value of the span attribute or by a tally of columns (col ) within the group. Column groups may be useful in speeding table display (for example, the columns can be displayed incrementally without waiting for the entire contents of the table) and provide a system for display on nonvisual display agents such as speech- and Braille-based browsers. The colgroup element must appear before any row (tr ) or rowgroup (thead, tbody, tfoot ) elements with the table element.

Attributes

Same attributes as col element

Example

<table>
<colgroup id="employinfo">
   <col span="2" width="100" />
   <col span="1" width="50" class="date" />
</colgroup>
<thead> . . .  (markup continues )