JSFiddle - React, Tailwind, and code Playground

HTML

<table id="supplierTable" class="table table-bordered table-condensed mySortedTable mainSubject">
    <thead>
        <tr>
            <th class="chkBoxColumn">Ariba Item?</th>
            <th>Qty</th>
            <th>Help Needed</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td><input class="myChkBox" type="checkbox" id="TableCellocItem0_<#=i#>_checkbox"  /></td>
            <td></td>
            <td></td>
        </tr>
        <tr>
            <td><input class="myChkBox" type="checkbox" id="TableCellocItem0_<#=i#>_checkbox"  /></td>
            <td>5</td>
            <td></td>
        </tr>
        <tr>
            <td><input class="myChkBox" type="checkbox" id="TableCellocItem0_<#=i#>_checkbox" checked /></td>
            <td>5</td>
            <td></td>
        </tr>
        <tr>
            <td><input class="myChkBox" type="checkbox" id="TableCellocItem0_<#=i#>_checkbox" checked /></td>
            <td></td>
            <td></td>
        </tr>
        <tr>
            <td><input class="myChkBox" type="checkbox" id="TableCellocItem0_<#=i#>_checkbox" checked /></td>
            <td>2</td>
            <td></td>
        </tr>
    </tbody>
</table>

JavaScript

$('.mySortedTable').ready(function() {
    $(".mySortedTable input.myChkBox:checked").closest('tr').find('td:eq(2)').text("Yes"); 
});