JSFiddle - React, Tailwind, and code Playground
HTML
<div id="wrapper">
<table class="table1">
<tr>
<td>
<select name="tasks" id="tasks">
<option value="">Tasks</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
</select>
</td>
<td class="days">Monday</td>
<td class="days">Tuesday</td>
<td class="days">Wednesday</td>
<td class="days">Thursday</td>
<td class="days">Friday</td>
<td class="days">Saturday</td>
<td class="days">Sunday</td>
</tr>
<tr class="row">
<td>1</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="row">
<td>2</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="row">
<td>3</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="row">
<td>4</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="row">
<td>5</td>
<td></td>
<td></td>
...
JavaScript
$(document).ready(function () {
$('table.table1').on('change', 'select', function () {
$(".row").css('background', '');
$("td").filter(function () {
return $(this).text() == $('#tasks').val();
}).closest("tr").css('background', 'red');
});
});