jqGrid删除多行数据问题

var consoleDlg = $("#delcostListDlg");
var selectedRowIds =
$("#costList").jqGrid("getGridParam","selarrrow");
var len = selectedRowIds.length;
for(var i = 0;i < len ;i ++) {
$("#costList").jqGrid("delRowData", selectedRowIds[0]);
} 

http://blog.csdn.net/drykilllogic/article/details/6112516#