JSFiddle - React, Tailwind, and code Playground

by Cone

HTML

<select class="sel">
    <option>green</option>
    <option>cyan</option>
    <option>blue</option>
    <option>другое *</option>
</select>

<div class="col"> dfsdfs </div>

CSS

option {
    color:blue;
    padding:5px!Important;
}

JavaScript

$('select.sel').on('change',function(){
    if($(this).val() == 'другое *'){
    alert("выбрано другое *");
    $(this).attr("disabled", "disabled");   
    }
});