you can put the input inside a form like this:-
<script>
$(document).ready(function(){
$(document).on('click','#send', function(){
$('#hid').val(data)
document.forms["myForm"].submit();
})
})
</script>
<form id="myForm" action="/request_page url/" method="post">
<input type="hidden" id="hid" name="hid"/>
</form>
<div id="send">Send Data</div>