JSFiddle - React, Tailwind, and code Playground

HTML

<table class="cron-tbl">                                        <tbody>                                            <tr>                                                <td colspan="2" class="table-header">Weekdays</td>                                            </tr>                                            <tr>                                                <td class="left-txt">                                                    <label><input type="radio" name="cron-weekdays" value="*">Every Minute</label><br>                                                    <label><input type="radio" name="cron-weekdays" value="*/2">Even Minutes</label><br>                                                    <label><input type="radio" name="cron-weekdays" value="1-59/2">Odd Minutes</label><br>                                                    <label><input type="radio" name="cron-weekdays" value="/5">Every 5 Minutes</label><br>                                                    <label><input type="radio" name="cron-weekdays" value="/15">Every 15 Minutes</label><br>                                                    <label><input type="radio" name="cron-weekdays" value="/30">Every 30 Minutes</label>                                                </td>                                                <td>                                                <table class="multi-select">                                                    <tbody>                                                        <tr>                                                            <td colspan="2">                                                                <input type="radio" name="cron-weekdays" value="select">                                                                <select size="8" name="selectWeekdays" multiple="">                                                                    <option value="0">Sun</option>}                                                                    <option...

JavaScript

$('document').ready(function(){
    $('select[multiple]').on('click', function(event) {
        $(this).siblings('input[type=radio]').attr('checked', true);
    });
});