JSFiddle - React, Tailwind, and code Playground

by vonDy2791

HTML

<select id="select_1" name="tipo_carta">
    <option value="1">90gr</option>
    <option value="2">150gr</option>
    <option value="3">270gr</option>
</select>
<select id="select_2" name="stampa">
    <option value="0">Fronte</option>
    <option value="1">Fronte e Retro</option>
</select>

JavaScript

$('#select_1').change(function () {
    if ($(this).val() == '3') {
        $("#select_2 option:contains('Fronte e Retro')").attr('disabled', true);
    } else {
        $("#select_2 option:contains('Fronte e Retro')").attr('disabled', false);
    }
});