JSFiddle - React, Tailwind, and code Playground
by Cwalkdawg
HTML
<table id="myTable">
<thead>
<tr>
<th class='fc-id1 ui-widget-header'>09:00</th>
</tr>
<tr>
<th class='fc-id2 ui-widget-header'>09:30</th>
</tr>
<tr>
<th class='fc-id3 ui-widget-header'>14:59</th>
</tr>
</thead>
<tbody>
<tr id='res1'>
<td class='fc-id4 ui-widget-content fc-resource1'>
<div class='day-content '></div>
</td>
</tr>
<tr id='res2 '>
<td class='fc-id5 ui-widget-content fc-resource2 '>
<div class='day-content'></div>
</td>
</tr>
<tr id='res3'>
<td class='fc-id6 ui-widget-content fc-resource3'>
<div class='day-content'></div>
</td>
</tr>
</tbody>
</table>
JavaScript
$('#myTable th').each(function (index) { //add index
var $this = $(this);
var d = new Date();
if ($this.text() === d.getHours() + ":" + d.getMinutes()) {
$('#res'+(index+1)).find('div.day-content').text("Your text"); //change your text
}
});