HTML <colgroup> tagS2C Home   « 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 -->

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