JSFiddle - React, Tailwind, and code Playground

HTML

<table border="1" class="wrap_trs">
    <tr>
        <td>111111</td>
        <td>222222</td>
        <td>333333</td>
        <td>444444</td>
    </tr>
</table>

CSS

.wrap_trs {
    
}

JavaScript

$('table.wrap_trs tr').unwrap(); 
var cells = $('table.wrap_trs tr td');
for (var i = 0; i < cells.length; i += 2) {
    cells.slice(i, i + 2).wrapAll('<tr></tr>');
}