Question

Is it valid to have a form tag inside a table tag? Some documentation links would be appreciated.

Answer 1

<form> is valid inside a <td> element. You can check this sort of thing at http://validator.w3.org. Choose "Validate by direct input", then paste the following HTML:

<table>
  <tbody>
    <tr>
      <td><form action="test"><div><input type="text"></div></form></td>
    </tr>
  </tbody>
</table>

Under "More options", select "Validate document fragment". This allows you to check a HTML snippet without writing an entire page for it. I use it for checking HTML fragments all the time.

References:

• The TD element
• The FORM element