JSFiddle - React, Tailwind, and code Playground

by Mohit Kumar Gupta

HTML

<select name="atributo_id[]" id="atributo_id" multiple="multiple" class="validate[required]">
<option value="5" groupid="1">Color : Azul</option>
</select>

<p><button id="btn">Check</button></p>

JavaScript

$(function(){
    $("#btn").click(function(){
        if(!$("#atributo_id option:selected").val()) {
            alert("Nothing has been selected");
        }
    });
});