Zoom In and Zoom Out Functionality on High Charts

events:{

                                            afterSetExtremes:function() {

                                                var singleGraphMinMaxTableData=[];

                                             for(z=0;z<singleGraphResponeFromAPIUserWhereRequired.length;z++){

                                                var minAxis = this.min,

                                                    maxAxis = this.max,

                                                    points = this.chart.series[z].points;

                                                  /*   min = points[z].options.y,

                                                    max = points[z].y; */

                                                      //console.log("series ::"+JSON.stringify(this.chart.series[z].name));

                                                var localArray=[];

                                                $.each(points, function(i, p) {

                                                    if(p.x >= minAxis && p.x <= maxAxis) {

                                                            localArray.push(p.y);

                                                   }

                                                });

                                                var min= Math.min.apply(Math, localArray);

                                                var max= Math.max.apply(Math, localArray);

                                                var name =this.chart.series[z].name;

                                                      var zoneAxis =this.chart.series[z].zoneAxis;

                                                var splittedName=name.split("/");

                                                singleGraphMinMaxTableData[z]= new Array(splittedName[0],zoneAxis,splittedName[splittedName.length-1],min,max);

                                                }

                                            $('#singleGraphLineMinMaxTable').DataTable( {

                                                        data: singleGraphMinMaxTableData,

                                                        "bDestroy":true,

                                                        columns: [

                                                            { title: "<fmt:message key="lbl.text.name"/>" },

                                                            { title: "<fmt:message key="lbl.text.type"/>" },

                                                            { title: "<fmt:message key="lbl.text.selected"/>" },

                                                            { title: "<fmt:message key="lbl.text.min"/>" },

                                                            { title: "<fmt:message key="lbl.text.max"/>" }

                                                        ]

                                                    } );

                                            //console.log("singleGraphMinMaxTableData-->"+JSON.stringify(singleGraphMinMaxTableData));

                                            }

                                        },