Use Of Colspan and Rowspan in Tables HTML

Colspan and Rowspan are two important attributes of TD and TH tags used in HTML tables.

Colspan

Colspan is an attribute of TD or TH tags used to make data cells and header cells in an HTML table. We can use Colspan to expand / span a cell on many columns. For example, in the following table, the first header cell spans two columns, so here we use <th colspan="2">Marks</th> to get the required result in the displayed html table.

Marks
Maths	Computer
100	87

The complete HTML coding is as follows:

<table border="1">
<tr> <th colspan="2">Marks</th> </tr>
<tr> <th>Maths</th><th>Computer</th></tr>
<tr> <td>100</td><td>87</td> </tr>
</table>

Rowspan

Rowspan attribute is used to expand or span a cell to multiple rows. For example, in the following table example, the first TH cell (Marks) spans on two rows. We use <th rowspan="2">Marks</th> for this purpose.

Marks	Maths	Computer
	100	87

The complete HTML coding of the table is as follows:
<table border="1">

<tr> <th rowspan="2">Marks</th>

<th>Maths</th><th>Computer</th></tr>

<tr><td>100</td><td>87</td></tr>

</table>