DataTables ajax 动态更新数据

taTableExt.oApi.fnReloadAjax = function(oSettings, sNewSource, fnCallback, bStandingRedraw) {            if (sNewSource !== undefined && sNewSource !== null) {                oSettings.sAjaxSource = sNewSource;            }            // Server-side processing should just call fnDraw            if (oSettings.oFeatures.bServerSide) {                this.fnDraw();                return;            }            this.oApi._fnProcessingDisplay(oSettings, true);            var that = this;            var iStart = oSettings._iDisplayStart;            var aData = [];            this.oApi._fnServerParams(oSettings, aData);            oSettings.fnServerData.call(oSettings.oInstance, oSettings.sAjaxSource, aData, function(json) {                /* Clear the old information from the table */                that.oApi._fnClearTable(oSettings);                /* Got the data - add it to the table */                var aData = (oSettings.sAjaxDataProp !== "") ?        that.oApi._fnGetObjectDataFn(oSettings.sAjaxDataProp)(json) : json;                for (var i = 0; i < aData.length; i++) {                    that.oApi._fnAddData(oSettings, aData[i]);                }                oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();                that.fnDraw();                if (bStandingRedraw === true) {                    oSettings._iDisplayStart = iStart;                    that.oApi._fnCalculateEnd(oSettings);                    that.fnDraw(false);                }                that.oApi._fnProcessingDisplay(oSettings, false);                /* Callback user function - for event handlers etc */                if (typeof fnCallback == 'function' && fnCallback !== null) {                    fnCallback(oSettings);                }            }, oSettings);        };

        $(document).ready(function() {                $('#reloadDataBtn').click(function() {                    otable.fnReloadAjax('mySource2.php');                });            otable=$("#myTable").dataTable({ bSort: true,                "bProcessing": true,                "sAjaxSource": 'mySource1.php',                bAutoWidth: true,                "iDisplayLength": 5, "aLengthMenu": [5, 10, 25, 50, 100],                 "sPaginationType": "full_numbers",                "aoColumnDefs": [{ "bSortable": false, "aTargets": [-1, 0]}]            });        });