HTML <col> tag
Examples
<Colgroup> and <col> tag for the three columns in the table set the background color:
<table border="1">
<colgroup>
<col span="2" style="background-color:red">
<col style="background-color:yellow">
</colgroup>
<tr>
<th>ISBN</th>
<th>Title</th>
<th>Price</th>
</tr>
<tr>
<td>3476896</td>
<td>My first HTML</td>
<td>$53</td>
</tr>
</table>
<colgroup>
<col span="2" style="background-color:red">
<col style="background-color:yellow">
</colgroup>
<tr>
<th>ISBN</th>
<th>Title</th>
<th>Price</th>
</tr>
<tr>
<td>3476896</td>
<td>My first HTML</td>
<td>$53</td>
</tr>
</table>
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Browser Support
All major browsers support <col> tag.
Tag definitions and instructions
<col> tag specifies <colgroup> column attributes for each column element inside.
By using <col> tag, you can apply a style to an entire column, rather than requiring repeated for each cell in each row or set the style.
Differences between HTML 4.01 and HTML5
HTML5 no longer supported in HTML 4.01 in most of the properties.
Differences between HTML and XHTML
In HTML, <col> tag has no end tag.
In XHTML, <col> tag must be properly closed.
Attributes
| 属性 | 值 | 描述 |
|---|---|---|
| align | left right center justify char |
HTML5 不支持。规定与 <col> 元素相关的内容的水平对齐方式。 |
| char | character | HTML5 不支持。规定根据哪个字符来对齐与 <col> 元素相关的内容。 |
| charoff | number | HTML5 不支持。规定第一个对齐字符的偏移量。 |
| span | number | 规定 <col> 元素应该横跨的列数。 |
| valign | top middle bottom baseline |
HTML5 不支持。规定与 <col> 元素相关的内容的垂直对齐方式。 |
| width | % pixels relative_length |
HTML5 不支持。 Specifies the width of a <col> element |
Global Properties
<col> tag supports HTML global properties .
Event Properties
<col> tag supports HTML event properties .