HTML <colgroup> tag
Definition and Usage
Defines groups of table columns. With this element, you can group columns for
formatting. This element is only valid inside the <table> tag.
Differences Between HTML and XHTML
NONE
Browser Support
The tag is supported in all major browsers.
Tips and Notes
Note: The colgroup element is an empty element that contains
attributes only. To create columns, you must specify td elements within a tr
element.
Example
This example creates a table with four columns, with the
first three columns in one colgroup, and the last column in the second colgroup:
| Source |
Output |
<table border="1">
<colgroup span="3" style="color:#FF0000;">
</colgroup>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
</table> |
|
Optional Attributes
DTD indicates in which DTD the attribute is
allowed. S=Strict, T=Transitional, and F=Frameset.
| Attribute |
Value |
Description |
DTD |
| align |
right
left
center
justify
char |
Defines the horizontal alignment of the contents in the column group |
STF |
| char |
character |
Defines a character to use to align text on (use with align="char") |
STF |
| charoff |
character-offset |
Defines an alignment offset to the first character to align on, as set with char |
STF |
| span |
number |
Defines the number of columns the <colgroup> should span |
STF |
| valign |
top
middle
bottom
baseline |
Defines the vertical alignment of the contents in the column group |
STF |
| width |
%
pixels
relative_length |
Defines the width of the column group. Note:
The width attribute can be overridden by settings in <col>! |
STF |
Standard Attributes
| id, class, title, style, dir, lang, xml:lang |
For a full description, go to Standard
Attributes.
Event Attributes
| onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup |
For a full description, go to Event
Attributes.
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