i have error in my jquery? what kind of error this?

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MVC

jQuery

Uncaught Error: Syntax error, unrecognized expression: #[object Object], what kind of error this please answer me.

This is the code...

<script type=text/javascript>
  function Cascading(parentddl, childddl, controllername, actionname, isaddempty) {
    $('#'+parentddl).val().live('change', function () {
      var idModel = $(this).val().toString();

      $.getJSON("/" + controllername + "/" + actionname, { id: idModel },
        function (ddlData) {
          var selectvalue = $('#'+childddl);
          selectvalue.empty();
          var ds = selectvalue.data().kendoDropDownList.dataSource;
          selectvalue.data(kendoDropDownList").dataSource.data([]);
          selectvalue.val().data("kendoDropDownList").text();
          $.each(ddlData, function (index, itemData) {
          selectvalue.data(kendoDropDownList").dataSource.add({ text: itemData.Text, value: itemData.Value });
        });
      });
    });
  }
</script>