How to define caption for the HTML5 table properly?

Use <caption> tag to define the caption of the table tag. eg.

<table>
<caption>This is the caption of the table.</caption>
<tr>
<td>1</td>
<td>2 fdsa f asd f af a df ads fasd f sad f </td>
</tr>
<tr>
<td>2</td>
<td>3</td>
</tr>
</table>