Auto select dropdown and sent

How to auto select dropdown and sent form call & select dropdown (For example, the second list) and sent form by javasript automaticaly?

problem on code, just first dropdown sent and not select id=ziabl

<script type=”text/javascript”>
var form = document.getElementById(“zibal”);
document.getElementById(“zibal”).addEventListener(“click”, function () {
form.submit();
});
document.getElementById(“checkout_confirmation”).submit();
</script>