JSFiddle - React, Tailwind, and code Playground

by Anderson Barreto Furlan

HTML

<select id="selecionados" name="selecionados[]" size="20" multiple >
 <option value="A">A</option>
 <option value="B">B</option>
</select>

JavaScript

$('#selecionados').on('change', function(){
    alert($(this).val());
});