Add static data to your ajax request parameters to avoid input hidden fields.
When you work on a table with actions (such as edit or delete), that's common to have a line number or a database id(!) or such that identifies each row.
This form looks like this:
<div
id="input"
style="width: 100%; height: 150px; border: 1px solid black; background-color: #AAAAAA;"
data-endpoint="input-attr-cursor-handler.php"
data-output="#output"
data-input-attr="left top"
>Click somewhere inside this box
</div>
<script type="text/javascript">
$('#input').click(function (e) {
var offset_t = $(this).offset().top - $(window).scrollTop();
var offset_l = $(this).offset().left - $(window).scrollLeft();
var left = Math.round((e.clientX - offset_l));
var top = Math.round((e.clientY - offset_t));
$(this).data('left', left);
$(this).data('top', top);
$(this).domAjax();
});
</script>
<div id="output"></div>
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