JSFiddle - React, Tailwind, and code Playground

by TrueBlueAussie

HTML

<table>
    <thead>
        <tr>
            <th>Heading 1</th>
            <th>Heading 2</th>
            <th>Heading 3</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>Lorem</td>
            <td>lipsum</td>
            <td>dolor</td>
        </tr>
    </tbody>
</table>

JavaScript

var $th = $("thead th");
var $tr = $("tbody tr");
$tr.each(function(){
    $(this).find('td').each(function(index){
        $(this).attr('data-attr', $th.eq(index).text());
    });
});