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HTML4 Reference

HTML <colgroup> tag

Definition

The <colgroup> tag is used to define criteria for a group of columns.

Example


<table>
  <colgroup span="2" width="200"></colgroup>
  <colgroup width="75"></colgroup>
  <tr>
    <th>Fruit</th>
    <th>Colour</th>
    <th>Quantity</th>
  </tr>
  <tr>
    <td>Banana</td>
    <td>Yellow</td>
    <td>5</td>
  </tr>
  <tr>
    <td>Pea</td>
    <td>Green</td>
    <td>50</td>
  </tr>
</table>

Required Attributes

NONE

Optional Attributes

align - limited browser support - use CSS instead.

char no browser support - specifies character to align cells to.

charoff no browser support - specifies offset of char character in pixels.

valign - limited browser support - use CSS instead.

span specifies the number of columns in a group.


<colgroup span="4"></colgroup>

width specifies the column group width.


<colgroup width="30"></colgroup>   <!-- in pixels -->
<colgroup width="25%"></colgroup>   <!-- as a percentage -->

Common Attributes

class - specifies a classname for the element allowing you to apply the style of the predefined class to the content.


<colgroup class="classname"></colgroup>

id - specifies a unique id for the element allowing you to apply the style of the predefined id to the content.


<colgroup id="idname"></colgroup>

style - specifies an inline style for the element allowing you to apply the style to the content.


<colgroup style="color:red;text-align:left"></colgroup>

title - specifies extra information about the content.


<colgroup title="information about the content"></colgroup>

Language Attributes

dir - specifies the directional flow of the content.


<colgroup dir="ltr"></colgroup>   <!-- The text will flow from left to right -->
<colgroup dir="rtl"></colgroup>   <!-- The text will flow from right to left -->

lang - specifies a language code for the content of the element.


<colgroup lang="en"></colgroup>

xml:lang - specifies a language code for the content of the element in XHTML documents.


<colgroup xml:lang="fr"></colgroup>

Document Event Attributes

NONE

Form Event Attributes

NONE

Image Event Attributes

NONE

Keyboard Event Attributes

onkeydown - The JavaScript code to be run when an element is in focus and keyboard key is pressed.


<colgroup onkeydown="go()"></colgroup>   <!-- Executes the go() function -->

onkeypress - The JavaScript code to be run when an element is in focus and keyboard key is pressed down and released.


<colgroup onkeypress="go()"></colgroup>   <!-- Executes the go() function -->

onkeyup - The JavaScript code to be run when an element is in focus and keyboard key is released.


<colgroup onkeyup="go()"></colgroup>   <!-- Executes the go() function -->

Mouse Event Attributes

onclick - The JavaScript code to be run when a mouse is clicked on the element.


<colgroup onclick="go()"></colgroup>   <!-- Executes the go() function --> 

ondblclick - The JavaScript code to be run when a mouse is double clicked on the element.


<colgroup ondblclick="go()"></colgroup>   <!-- Executes the go() function -->

onmousedown - The JavaScript code to be run when the mouse button is pressed down while the cursor is over the element.


<colgroup onmousedown="go()"></colgroup>   <!-- Executes the go() function -->

onmousemove - The JavaScript code to be run when the mouse button is moved.


<colgroup onmousemove="go()"></colgroup>   <!-- Executes the go() function -->

onmouseout - The JavaScript code to be run when the mouse cursor moves off an element.


<colgroup onmouseout="go()"></colgroup>   <!-- Executes the go() function -->

onmouseover - The JavaScript code to be run when the mouse cursor moves over an element.


<colgroup onmouseover="go()"></colgroup>   <!-- Executes the go() function -->

onmouseup - The JavaScript code to be run when the mouse button is released while the cursor is over the element.


<colgroup onmouseup="go()"></colgroup>   <!-- Executes the go() function -->


<col> tag    << Prev          Next >>   <dd> tag

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HTML Elements

The complete set of HTML elements also known as HTML tags from the latest HTML 4.01 Specification.

Click the links for more information on individual tags and their attributes.

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<!DOCTYPE>

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<colgroup>

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