JSFiddle - React, Tailwind, and code Playground
HTML
<div class="content">
<table>
<tr>
<td class="quantity">fasf</td>
<td class="quantity">fasf</td>
</tr>
<tr>
<td class="quantity">fasf</td>
<td class="quantity">fasf</td>
</tr>
<tr>
<td class="quantity">fasf</td>
<td class="quantity">fasf</td>
</tr>
</table>
</div>
JavaScript
var content = $('.content table');
console.log($('.quantity', content).text('6').end().parent().html());