未选中子节点时如何避免取消选中父节点

Question

I have a java script where all child nodes are checked when parent node is checked but my problem is when I'm unchecking child node, parent node is also unchecked.I dont want my parent node to uncheck when child node is unchecked. My script is

  <script type="text/javascript">
       $(function chkitemscript() {
            $("[id*=TreeView1] input[type=checkbox]").bind("click", function () {
                var table = $(this).closest("table");
                if (table.next().length > 0 && table.next()[0].tagName == "DIV") {
                    //Is Parent CheckBox
                    var childDiv = table.next();
                    var isChecked = $(this).is(":checked");
                    $("input[type=checkbox]", childDiv).each(function () {
                        if (isChecked) {
                            $(this).attr("checked", "checked");
                        } else {
                            $(this).removeAttr("checked");
                        }
                    });
                } else {
                    //Is Child CheckBox
                    var parentDIV = $(this).closest("DIV");
                    if ($("input[type=checkbox]", parentDIV).length == $("input[type=checkbox]:checked", parentDIV).length) {
                        $("input[type=checkbox]", parentDIV.prev()).attr("checked", "checked");
                    } else {
                        $("input[type=checkbox]", parentDIV.prev()).removeAttr("checked");
                    }
                }
            });
        })

    </script>

Answer 1

   else {
                    //Is Child CheckBox
                    var parentDIV = $(this).closest("DIV");
                    if ($("input[type=checkbox]", parentDIV).length == $("input[type=checkbox]:checked", parentDIV).length) {
                        $("input[type=checkbox]", parentDIV.prev()).attr("checked", "checked");
                    } else {
                        $("input[type=checkbox]", parentDIV.prev()).removeAttr("checked");
                    }
                }

Please remove the above else part this may work