jqGrid列的统计

    $("#List").jqGrid({
                   url: "${pageContext.request.contextPath}/cbfx/getCbhzList.do",
                   datatype: "json",
                   mtype: 'GET',
                   colNames:["成本类别","费用","去年同期费用","备注"],
                   colModel:[
                       {name: "cblb", align: 'center', width:120},
                       {name: "fy", align: 'center', width:100},
                       {name: "qntqFy", align: 'center', width:100},
                       {name: "", align: 'center', width:100}
                   ],
                   rownumbers:true,
                   rowNum: 10,
                   page: 1,
                   footerrow:true,
            gridComplete: completeMethod,
                   total: 15,
                   rowList: [10, 20, 30],
                   pager: "#cbhzPager",
                   viewrecords: true,
                   height: "auto",
                   autowidth: true,
                   gridview:true,
                   autoencode: true,
                   multiselect: false,
                   caption: "标题"
               }).navGrid("#cbhzPager", {
                   refresh: false,
                   edit: false,
                   add: false,
                   del: false,
                   search: false
               });    

               /*统计功能 */
            function completeMethod(){
                   var sum_Fy=$("#List").getCol('fy',false,'sum');
                   var sum_qntqFy=$("#List").getCol('qntqFy',false,'sum');
                   $("#List").footerData('set', { "cblb": '合计', fy: sum_Fy, qntqFy: sum_qntqFy });
               }
           });