what is the using of rowspain???

Answer 1

for splitting a rows (tr)

Answer 2

The rowspan* attribute specifies the number of rows a cell should span.

Syntax:
<td rowspan="number">

Example:
<table>
<thead>
  <tr>
    <th>Month</th>
    <th>Savings</th>
    <th rowspan="3">Savings for holiday!</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td>January</td>
    <td>$100</td>
    <tdrowspan="0">$100</td>
  </tr>
  <tr>
    <td>February</td>
    <td>$80</td>
  </tr>
</tbody>
</table>

Open this script in the app - http://www.sololearn.com/app/html/playground/WScUC0EBda9Y/

P.S. If you don't understand something just try it in the code playground.

- Dumitru
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