JSFiddle - React, Tailwind, and code Playground

HTML

<select id='selectBox'>
    <option>a</option>
    <option>b</option>
</select>
<select id='selectBox2' disable=true>
    <option>a</option>
    <option>b</option>
</select>

JavaScript

$(function() {
    $('#selectBox').on('change',function(){('#selectBox').disable='false'})
});