JSFiddle - React, Tailwind, and code Playground
HTML
<table>
<tr id='a'>
<td id='aa'>Cell A</td>
<td id='ab'>Cell B</td>
<td id='ac'>Cell C</td>
</tr>
<tr id='b'>
<td id='ba'>Cell A</td>
<td id='bb'>Cell B</td>
<td id='bc'>Cell C</td>
</tr>
</table>
JavaScript
$(function(){
var tdIds='';
$('table #b td').each(function(){
tdIds=tdIds+$(this).attr('id')+ ',';
});
alert(tdIds);
});