JSFiddle - React, Tailwind, and code Playground

HTML

<select id='media' name='media'>
   <option value='1'>media1</option>
   <option value='2'>media2</option>
   <option value='3'>media3</option>
</select>

JavaScript

$(document).ready(function()
{
    $("#media").change(function()
    {
        var id=$(this).val();
        var dataString = 'id='+ id;
        alert(id); return false;

    });

});