JSFiddle - React, Tailwind, and code Playground

HTML

<select id="group_4" class="attribute_select selectBox" onchange="alert(this.value)" name="group_4">
<option title="Small" selected="selected" value="21">Small</option>
<option title="Medium" value="41">Medium</option>
<option title="Large" value="40">Large</option>
<option title="Extralarge" value="25">Extralarge</option>
</select>
<button>auto</button>

JavaScript

$('button').click(function(){
    document.getElementById('group_4').value = 41;
    $('select').change();
});