JSFiddle - React, Tailwind, and code Playground
HTML
<div id="mygrid">
<table style="width:100%">
<tr class="red-background">
<td class="date">10/07/2018</td>
<td class="hora">13:09</td>
<td>94</td>
</tr>
<tr>
<td>Eve</td>
<td>Jackson</td>
<td>94</td>
</tr>
</table>
</div>
JavaScript
console.log($('#mygrid > table tr')[0].outerHTML.split('\n')[0]);