SO - 28475855

by Arun P Johny

HTML

<table>
    <thead>
        <tr>
            <th>First Name</th>
            <th>Last Name</th>
            <th>Job Title</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>James</td>
            <td>Matman</td>
            <td>Chief Sandwich Eater</td>
        </tr>
        <tr>
            <td>The</td>
            <td>Tick</td>
            <td>Crimefighter Sorta</td>
        </tr>
    </tbody>
</table>

JavaScript

jQuery(function ($) {
    $('table thead th').each(function (i) {
        $('table tbody td:nth-child(' + (i + 1) + ')').prepend($(this).text() + ': ');
    });
});