JSFiddle - React, Tailwind, and code Playground

HTML

<table id="mytable">
    <tr>
        <td class="supplierOrderId">10790</td>
        <td class="revision_id">#7</td>
        <td class="supplier">DGI Developpement</td>
        <td class="quantity">80</td>
        <td class="stock">0</td>
        <td class="purchase_price">10.00</td>
        <td class="comments"></td>
    </tr>
</table>

JavaScript

var text = $('td').filter(function () {
     return this.className === 'revision_id';
 }).text().slice(1);
 text = +text;
 alert(text);