JSFiddle - React, Tailwind, and code Playground

by Brunno Romero

HTML

<select id="estado">
    <option>Selecione..</option>
    <option value="sp">SP</option>
    <option value="mg">MG</option>
</select>
<select class="cidades sp" disabled>
    <option>Campinas</option>
    <option>Holambra</option>
</select>
<select class="cidades mg" disabled>
    <option>Poços de Caldas</option>
    <option>Belo Horizonte</option>
</select>

JavaScript

$(document).ready(function () {

    $('#estado').change(function () {
        
        $('.cidades')    
         	.prop("disabled", true);
        
        $('.' + $(this).val())
            .prop("disabled", false);
                 
    });

});