JQuery (javascript) On selectlist change – get selected/current value and do some action

If you have form with select list

    <form name="exampleform" action="index.php" method="POST">
        <select name="myselect" id="myselectid">
            <option value="apple">Apple</option>
            <option value="banana">Banana</option>
            <option value="melon">Melon</option>
        </select>
    </form>

and you need to do some action when user change/select some items in select list then you can use this construction:

    $("#myselectid").change(function () {
            var user_selected = $(this).val();
            console.log('User selected value: ' + user_selected);
    });