JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr id="row1">
        <td class="mc" id="cel11"></td>
        <td class="mc" id="cel12"></td>
    </tr>
    <tr id="row2">
        <td id="cel21"></td>
        <td id="cel22"></td>
    </tr>
</table>

JavaScript

$(".mc").each(function() {
   alert($(this).attr('id'));
});