JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tbody>
        <tr id="test">
            <td>col1</td>
            <td>col2</td>
        </tr>
        <tr id="test a">
            <td>col1</td>
            <td>col2</td>
        </tr>
        <tr id="test.a">
             <td>col1</td>
             <td>col2</td>
         </tr>
    </tbody>
</table>

JavaScript

$('tbody tr').each(function (rowNum, tr) {
    alert($(tr).html());
    alert($('td', $(tr)).length);
});