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The <col/> Tag in HTML 5
The <col> tag can only be used inside a table colgroup element and provides style information for a column in an HTML table. For example, in the HTML table demo below there is a style for each column that sets the column width to 20%, 30% and 50%, respectively.
| Multiple Column Heading | ||
|---|---|---|
| First Column Heading | Second Column Heading | |
| This is an example of an HTML table footer. | ||
| Row 1 | Row 1 Column 1 | Row 1 Column 2 |
| Row 2 | Row 2 Column 1 | Row 2 Column 2 |
This is an actual working demo of the table column example code below. (Do View Source to verify that this page is using the HTML 5 DOCTYPE. You can also verify it is Valid HTML 5 using the HTML Validator. Try using it to validate URLs with HTML examples from other places that claim to be HTML 5 web sites!)
See the tutorial on Creating HTML Tables for full details on how to create an HTML table using the HTML table tags together.
<col/> Tag Syntax
Rules for coding HTML col/ elements
<col .../>
<col/> Content Model
Contents of the col element
Content: Empty. All properties are coded using attributes.
Since the <col/> tag is a void element, it is not allowed to have any content, even HTML comments and therefore should always be coded as a self-closing standalone tag, ending with the delimiter string /> rather than just > (<col .../>).
<col/> Tag Attributes
Attributes of the <col> tag
| global attributes | In addition to the personal attributes of the <col> tag below, any of the common HTML attributes can also be coded. |
<col/> Tag Examples
Examples of the col tag in HTML 5
Here is the HTML code for the table demo above:
<table>
<caption>Table Caption</caption>
<colgroup>
<col style="width: 20%"/>
<col style="width: 80%"/>
</colgroup>
<thead>
<tr>
<th rowspan="2"></th>
<th colspan="2">Multiple Column Heading</th>
</tr>
<tr style="vertical-align: bottom">
<th>First Column Heading</th>
<th>Second Column Heading</th>
</tr>
</thead>
<tfoot>
<tr><td colspan="2">This is an example of an HTML table footer.</td></tr>
</tfoot>
<tbody>
<tr>
<td>Row 1 Column 1</td>
<td>Row 1 Column 2</td>
</tr>
<tr>
<td>Row 2 Column 1</td>
<td>Row 2 Column 2</td>
</tr>
</tbody>
</table>
Changes in HTML 5 - <col/> Tag
What's new in HTML 5
Differences between HTML 5 and earlier versions of HTML
The 2000-2010 Recommendations from the W3C HTML Working Group defined the HTML namespace for the col/ element type name along with the names of all HTML element types. In older (pre-2000) versions of HTML, element type names were not associated with a namespace.