jqGrid复制表格数据到另外一张表中

var selectedIds = $("#jqGrid_chooseProjectPerson").jqGrid("getGridParam", "selarrrow");
var old_ids = $('#jqGrid_alreadyChoose').getDataIDs();//目标表中所有数据的行号
for (var i = 0; i < selectedIds.length; i++) {
    var j = old_ids.indexOf(selectedIds[i]);
    if (j == -1) {
        var rowData = $("#jqGrid_chooseProjectPerson").jqGrid('getRowData', selectedIds[i]);
        $('#jqGrid_alreadyChoose').jqGrid("addRowData", selectedIds[i], rowData);
        $("#jqGrid_alreadyChoose").jqGrid('setSelection',selectedIds[i]);
    }
}