JQuery: sort td values on multiple tables : I'd need to sort the first td elements of a 3 html tables. I must use Jquery to do it. Not pure javascript.

Exemple:

        <table>
            <tr>
                <td>cx</td>
                <td>xx</td>
            </tr>
        </table>
        <table>
            <tr>
                <td>bx</td>
                <td>xx</td>
            </tr>
        </table>
        <table>
            <tr>
                <td>ax</td>
                <td>xx</td>
            </tr>
        </table>
The result I would like to get is:

        <table>
            <tr>
                <td>ax</td>
                <td>xx</td>
            </tr>
        </table>
        <table>
            <tr>
                <td>cx</td>
                <td>xx</td>
            </tr>
        </table>
        <table>
            <tr>
                <td>ex</td>
                <td>xx</td>
            </tr>
        </table>

I have tried to use $.each loop to 